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Posted to users@spamassassin.apache.org by Jesse Shumaker <je...@gmail.com> on 2005/07/05 08:59:51 UTC
SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Here is my situation. Currently, our e-mail isn't managed within our
organization. We have a third party ISP who is hosting the e-mail for us. We
simply configure our Outlook clients to authenticate to their SMTP/POP
servers. Is there a way that I could setup a SpamAssassin box at each of my
sites to filter each Outlook clients' outgoing and incoming mail? I'm not
sure if this is possible and I am a novice on the technology of e-mail.
Here's how I see it working:
It would be just like a web proxy. The outlook clients are redirectd to the
spamassassin box which filters the e-mail and forwards/relays the requests
onto our ISP's e-mail servers. If you can assist me at all with this I would
be greatly appreciated.
thanks
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Steven Dickenson <st...@mrchuckles.net>.
On Jul 5, 2005, at 2:59 AM, Jesse Shumaker wrote:
> Here is my situation. Currently, our e-mail isn't managed within
> our organization. We have a third party ISP who is hosting the e-
> mail for us. We simply configure our Outlook clients to
> authenticate to their SMTP/POP servers. Is there a way that I could
> setup a SpamAssassin box at each of my sites to filter each Outlook
> clients' outgoing and incoming mail?
You can set up a box running fetchmail to grab messages from your
ISP's POP3 server, and then run them through SpamAssassin before
delivering them to a mailbox on that box. Then, set your Outlook
clients to use your local box as the POP3 / IMAP server. You'll
loose the ability to reject mail based on SA scores, but you can
throw the spam into a separate folder for each user. I do this for
my home network and it works quite nicely.
Steven
---
Steven Dickenson <st...@mrchuckles.net>
http://www.mrchuckles.net
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Paolo Cravero as2594 <pc...@as2594.net>.
Jesse Shumaker wrote:
> Let me try and summarize what I have recieved from all these e-mails as
[...]
> use and am trying to piece it all together.
Correct, except that the remote POP3 server is specified on client
configuration and not wired statically on the pop3 proxy box. At least
with the SApop3proxy we're using.
Ciao,
pc
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Jesse Shumaker <je...@gmail.com>.
We have 9 site and around 20 users who need e-mail on average per site. What
I really want in the end is a SpamAssassin, ClamAV, setup. I want to make it
so that the users can either grab their filtered mail from a linux box
inside each site that has already pulled their mail from the ISP's mail
server, or a linux box at each site that just acts as a filter and the
clients connect through it to receive their SpamAssassined/ClamAV filtered
mail. At a maximum I just want to have to change the clients e-mail
settings, not install a program to get this working. I also need this to
work in Debian Knoppix. This is due to the auto hardware configuration it
offers. Right now I am gathering information on the possibilities of this
and getting documentation on how it can be implemented. I plan on getting a
lot of the base stuff out of the way in the next few days. This involves the
Knoppix install, network configuration, webmin install, and then the
spamassassin/clamav install. From there I will need to configure it all to
work in one of the two ways I mentioned earlier. I am just trying to sort
all this information and decide on the most efficient route to reach this
goal. I appreciate all the help given so far.
On 7/7/05, Loren Wilton <lw...@earthlink.net> wrote:
>
> > Procmail will act as the pop3 server
> Not quite. My belief (and Joanne set this up, so she has the actual
> details) is that Fetchmail is feeding procmail, possibly going through
> Sendmail to do this. Procmail has a 2-line recipe that calls SA as part of
> the delivery process for local deliery to an account on the Linux box.
> Then the standard Linux pop3 server is used to let users pull mail from
> this mailbox.
> We don't use Clam here, since we have Semantic on the final destination
> Windoze boxen, and this seems to work well enough. We're also pulling from
> Earthlink accounts using pop3, and they have a first level of virus buster
> there, so things actually get virus scanned twice.
> I don't know if Clam can be integrated using Procmail or not. If it can
> be executed as a normal Unix stdin-stdout filter, I don't know why it
> wouldn't be possible to do it that way. So you should (I think!) be able to
> feed to clam, and then to SA (actually spamd), and have the resulting mail
> end up sitting in user mailboxes ready to be grabbed by the users using
> pop3.
> I don't recall if you said your users are windows-types or unixen, but
> I'm assuming they are windows users. If you want to enable Bayes with this
> setup you should be able to do it either per-user or site-wide fairly
> easily. There is a plethora of information on setting up some imap ham/spam
> drop boxes that users can easily get to from either OE or Outlook to use for
> training the Bayes database. Works like a charm here.
> Loren
>
> ----- Original Message -----
> *From:* Jesse Shumaker <je...@gmail.com>
> *To:* users@spamassassin.apache.org
> *Sent:* Thursday, July 07, 2005 7:14 PM
> *Subject:* Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
>
> Loren,
>
> So with doing it this way and setting up user accounts for each e-mail
> account on the linux box and using Fetchmail which is installed on the Linux
> box to grab each users mail from the ISP, Procmail will act as the pop3
> server to allow these users to grab their mail internally from the linux
> box, and SpamAssassin would filter all the spam due to being installed on
> the central Linux box? Does your organization use ClamAV to remove filter
> virus's from the e-mail as well?
>
> Thanks a lot for this.
>
> On 7/7/05, Loren Wilton <lw...@earthlink.net> wrote:
> >
> > I don't immediately see that anyone more knowledgable replied, so I'll
> > toss out some possibilities/confirmations:
> > Yes, you need something like a Linux box. It will run SA, and will
> > retrieve mail using pop3 from your current provider. Pop3proxy is one
> > possibility. Another possibility is Fetchmail feeding into a local mail
> > system.
> > I don't recall if you said how many users you have, but my impression
> > is it is no more than a few thousand, perhaps only a few hundred. At this
> > size it would be feasible to set up an account on the linux box for each
> > user, and deliver mail into these accounts.
> > Basically you can use Fetchmail to grab the mail from your current pop3
> > server and stick it into the standard unix mail files for each user on the
> > system. Then you can use a pop3 server on the linux box so your user can
> > grab their mail out of these accounts. SA would be in the middle of that
> > process, probably something like
> > Fetchmail->procmail->SA->mailbox->pop3server.
> > You users don't need actual access to these accounts, or even know that
> > they exist, and I think you can set them up as no login. All the users will
> > have to do is change the hostname in their pop3 mail configuratios for where
> > they grab mail. Unless you want to run outbound through SA also, they won't
> > have to change the current smtp info pointing to your external provider.
> > This is essentially how we have things set up here.
> > Loren
> >
> > ----- Original Message -----
> > *From:* Jesse Shumaker <je...@gmail.com>
> > *To:* users@spamassassin.apache.org
> > *Sent:* Wednesday, July 06, 2005 11:07 PM
> > *Subject:* Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
> >
> > Let me try and summarize what I have recieved from all these e-mails as
> > well as put together myself. Then you guys could give me some feedback if
> > I'm on the right trail. What I need to do is install SpamAssassin
> > w/pop3proxy on a linux box. Then setup the pop3proxy to point to my external
> > pop3 server. On the client side I will need to setup each client's login to
> > include their login name and the SpamAssassin/pop3proxy server (I'm not sure
> > if I can only do this if I use the SAproxy utility for windows). Thats how I
> > understand this should work. Now configuring this is another situation. How
> > does it look to you guys? I have just noticed that there are a lot of
> > utilities and stuff to use and am trying to piece it all together.
> >
> > thanks
> >
> > On 7/6/05, Jesse Shumaker <je...@gmail.com> wrote:
> > >
> > > So you must have SAproxy on each client to do this? I know that is
> > > another product that I have heard of. If so do you have a download link
> > > where I can get SAproxy? If that is just the name you are calling the
> > > SpamAssassin proxy it looks like all I would need to do is specify the
> > > destination server in the login box and I'm set. All I have to do on the
> > > server end is setup the POP3proxy. Is this correct?
> > >
> > > On 7/6/05, Paolo Cravero as2594 < pcravero@as2594.net > wrote:
> > > >
> > > > Jesse Shumaker wrote:
> > > >
> > > > Hi
> > > >
> > > > > This looks good and I think I may try this perl module. It seems
> > > > that
> > > > > it's geared towards a single workstation and not a network of
> > > > machines.
> > > > > They say that you point your client to localhost, which means that
> > > > each
> > > > > machine must have this installed. How are you guys running this so
> > > > that
> > > > > you can have one centralized SA server? Also, how does the SA box
> > > > > authenticate with the ISP's POP servers for each e-mail client? In
> > > > my
> > > > > organization each user has their own password and username for
> > > > their
> > > > > e-mail account.
> > > >
> > > > We installed it on a linux box with SA, and run it as a deamon. It
> > > > supports concurrent connections, altought we haven't tested it
> > > > thoroughly (hundreds of simultaneous connections...). So, rather
> > > > than
> > > > installing it locally on each machine, use a shared POP proxy.
> > > >
> > > > The client sends SAproxy the user/password, that then SAproxy
> > > > submits to
> > > > the remote server. It is a proxy for POP3 protocol (no support for
> > > > POP3*S*), just that before sending the message to the client it is
> > > > scanned by SA.
> > > >
> > > > It is also very flexible, since the destinaton server has to be
> > > > specified as part of the login string (paolo@domain.com
> > > > #pop.domain.com
> > > > to retrieve mail with login paolo@domain.com from pop.domain.com<http://pop.domain.com>
> > > > server): your colleagues can use the same proxy box for retrieving
> > > > mail
> > > > from other POP3 accounts as well.
> > > >
> > > > PC
> > > >
> > > > --
> > > > | QRPp-I #707 + www.paolocravero.tk <http://www.paolocravero.tk> + I
> > > > QRP #476 |
> > > > | SpamAssassin-based email antispam/antivirus solutions |
> > > > \ Italian/English-to/from-Croatian translations /
> > > > \ Skype: pcravero /
> > > >
> > >
> > >
> >
>
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Kai Schaetzl <ma...@conactive.com>.
Jesse Shumaker wrote on Fri, 8 Jul 2005 01:51:13 -0700:
> I want to do
> what you say you've created at home but don't have documentation on how to
> set this up.
virusscanning + SA: check out MailScanner or MIMEDefang.
BTW: most Linux systems can adapt to different hardware quite nicely. If you
use the default kernel of a Suse distribution you can even switch between AMD
and Intel.
Kai
--
Kai Schätzl, Berlin, Germany
Get your web at Conactive Internet Services: http://www.conactive.com
IE-Center: http://ie5.de & http://msie.winware.org
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Jesse Shumaker <je...@gmail.com>.
"If you're interested in doing AV scanning in addition to spam
scanning / tagging, then you're probably better off to have fetchmail
deliver POP'ed mail to an MTA like Postfix or Exim, and have it do
the spam / AV scanning. I use Exim exclusively, and have this exact
set up running on my home server for friends and family. Works great."
Do you think you could provide me with some documentation on how you're
doing this? That is the biggest challenge for me right now. I want to do
what you say you've created at home but don't have documentation on how to
set this up. I'm so new to all these mail programs in Linux and need some
solid direction to learn how to integrate everything into an ultimate
spam/virus killing macine ;)
thanks
On 7/7/05, Jesse Shumaker <je...@gmail.com> wrote:
>
> "If you're interested in doing AV scanning in addition to spam
> scanning / tagging, then you're probably better off to have fetchmail
> deliver POP'ed mail to an MTA like Postfix or Exim, and have it do
> the spam / AV scanning. I use Exim exclusively, and have this exact
> set up running on my home server for friends and family. Works great."
>
> Do you think you could provide me with some documentation on how you're
> doing this? That is the biggest challenge for me right now. I want to do
> what you say you've created at home but don't have documentation on how to
> set this up. I'm so new to all these mail programs in Linux and need some
> solid direction to learn how to integrate everything into an ultimate
> spam/virus killing macine ;)
>
> thanks
>
>
> On 7/7/05, Steven Dickenson <st...@mrchuckles.net> wrote:
> >
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> >
> > On Jul 7, 2005, at 10:59 PM, Loren Wilton wrote:
> >
> > > > Procmail will act as the pop3 server
> > >
> > > Not quite. My belief (and Joanne set this up, so she has the
> > > actual details) is that Fetchmail is feeding procmail, possibly
> > > going through Sendmail to do this. Procmail has a 2-line recipe
> > > that calls SA as part of the delivery process for local deliery to
> > > an account on the Linux box.
> >
> > Fetchmail can deliver to procmail directly, or any MDA for that
> > matter (I've heard of people using maildrop as well).
> >
> > > I don't know if Clam can be integrated using Procmail or not. If
> > > it can be executed as a normal Unix stdin-stdout filter, I don't
> > > know why it wouldn't be possible to do it that way. So you should
> > > (I think!) be able to feed to clam, and then to SA (actually
> > > spamd), and have the resulting mail end up sitting in user
> > > mailboxes ready to be grabbed by the users using pop3.
> >
> > If you're interested in doing AV scanning in addition to spam
> > scanning / tagging, then you're probably better off to have fetchmail
> > deliver POP'ed mail to an MTA like Postfix or Exim, and have it do
> > the spam / AV scanning. I use Exim exclusively, and have this exact
> > set up running on my home server for friends and family. Works great.
> >
> > > I don't recall if you said your users are windows-types or unixen,
> > > but I'm assuming they are windows users. If you want to enable
> > > Bayes with this setup you should be able to do it either per-user
> > > or site-wide fairly easily. There is a plethora of information on
> > > setting up some imap ham/spam drop boxes that users can easily get
> > > to from either OE or Outlook to use for training the Bayes
> > > database. Works like a charm here.
> >
> > Since he's lost the ability to do SMTP-time rejection, what with
> > using fetchmail and all, I'd go with per-user bayes databases. Just
> > make sure your users spend a little time training it up front. You
> > might want to look at a web-based front-end to handle bayes training
> > and per-user settings. Check the wiki for options.
> >
> > Steven
> > - ---
> > Steven Dickenson <st...@mrchuckles.net>
> > http://www.mrchuckles.net
> >
> >
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> > Version: GnuPG v1.4.1 (Darwin)
> >
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> > =qvJS
> > -----END PGP SIGNATURE-----
> >
>
>
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Jesse Shumaker <je...@gmail.com>.
I need to use Knoppix due to it's ability to detect new hardware on each
boot. this way I can just clone the hard drives into new systems that might
have different hardware. I don't have any preference with the MTA. I have
heard that sendmail is really deep and hard to configure, but that is all.
My experience level with linux is pretty good. There are a lot of services
and apps. that I haven't touched or configured but I know how to get around
Linux pretty well. If I had a howto on setting this up I could follow it and
accomplish what is outlined. In terms of projects, at my work I have
implemented an open source solution for Trouble Tickets called OTRS. I have
played with many of the different distributions. Redhat, SuSE, Gentoo,
Debian, OpenBSD, Obuntu, and a few others.
On 7/8/05, Steven Dickenson <st...@mrchuckles.net> wrote:
>
> Jesse Shumaker wrote:
> > Do you think you could provide me with some documentation on how you're
> > doing this? That is the biggest challenge for me right now. I want to do
> > what you say you've created at home but don't have documentation on how
> > to set this up. I'm so new to all these mail programs in Linux and need
> > some solid direction to learn how to integrate everything into an
> > ultimate spam/virus killing macine ;)
>
> What distro are you running? Do you have any preference for MTA
> (Sendmail, Postfix, qmail, and Exim are the big 4)? What is your
> overall experience level with Linux?
>
> Steven
>
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Steven Dickenson <st...@mrchuckles.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On Jul 7, 2005, at 10:59 PM, Loren Wilton wrote:
> > Procmail will act as the pop3 server
>
> Not quite. My belief (and Joanne set this up, so she has the
> actual details) is that Fetchmail is feeding procmail, possibly
> going through Sendmail to do this. Procmail has a 2-line recipe
> that calls SA as part of the delivery process for local deliery to
> an account on the Linux box.
Fetchmail can deliver to procmail directly, or any MDA for that
matter (I've heard of people using maildrop as well).
> I don't know if Clam can be integrated using Procmail or not. If
> it can be executed as a normal Unix stdin-stdout filter, I don't
> know why it wouldn't be possible to do it that way. So you should
> (I think!) be able to feed to clam, and then to SA (actually
> spamd), and have the resulting mail end up sitting in user
> mailboxes ready to be grabbed by the users using pop3.
If you're interested in doing AV scanning in addition to spam
scanning / tagging, then you're probably better off to have fetchmail
deliver POP'ed mail to an MTA like Postfix or Exim, and have it do
the spam / AV scanning. I use Exim exclusively, and have this exact
set up running on my home server for friends and family. Works great.
> I don't recall if you said your users are windows-types or unixen,
> but I'm assuming they are windows users. If you want to enable
> Bayes with this setup you should be able to do it either per-user
> or site-wide fairly easily. There is a plethora of information on
> setting up some imap ham/spam drop boxes that users can easily get
> to from either OE or Outlook to use for training the Bayes
> database. Works like a charm here.
Since he's lost the ability to do SMTP-time rejection, what with
using fetchmail and all, I'd go with per-user bayes databases. Just
make sure your users spend a little time training it up front. You
might want to look at a web-based front-end to handle bayes training
and per-user settings. Check the wiki for options.
Steven
- ---
Steven Dickenson <st...@mrchuckles.net>
http://www.mrchuckles.net
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Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Loren Wilton <lw...@earthlink.net>.
> Procmail will act as the pop3 server
Not quite. My belief (and Joanne set this up, so she has the actual details) is that Fetchmail is feeding procmail, possibly going through Sendmail to do this. Procmail has a 2-line recipe that calls SA as part of the delivery process for local deliery to an account on the Linux box.
Then the standard Linux pop3 server is used to let users pull mail from this mailbox.
We don't use Clam here, since we have Semantic on the final destination Windoze boxen, and this seems to work well enough. We're also pulling from Earthlink accounts using pop3, and they have a first level of virus buster there, so things actually get virus scanned twice.
I don't know if Clam can be integrated using Procmail or not. If it can be executed as a normal Unix stdin-stdout filter, I don't know why it wouldn't be possible to do it that way. So you should (I think!) be able to feed to clam, and then to SA (actually spamd), and have the resulting mail end up sitting in user mailboxes ready to be grabbed by the users using pop3.
I don't recall if you said your users are windows-types or unixen, but I'm assuming they are windows users. If you want to enable Bayes with this setup you should be able to do it either per-user or site-wide fairly easily. There is a plethora of information on setting up some imap ham/spam drop boxes that users can easily get to from either OE or Outlook to use for training the Bayes database. Works like a charm here.
Loren
----- Original Message -----
From: Jesse Shumaker
To: users@spamassassin.apache.org
Sent: Thursday, July 07, 2005 7:14 PM
Subject: Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Loren,
So with doing it this way and setting up user accounts for each e-mail account on the linux box and using Fetchmail which is installed on the Linux box to grab each users mail from the ISP, Procmail will act as the pop3 server to allow these users to grab their mail internally from the linux box, and SpamAssassin would filter all the spam due to being installed on the central Linux box? Does your organization use ClamAV to remove filter virus's from the e-mail as well?
Thanks a lot for this.
On 7/7/05, Loren Wilton <lw...@earthlink.net> wrote:
I don't immediately see that anyone more knowledgable replied, so I'll toss out some possibilities/confirmations:
Yes, you need something like a Linux box. It will run SA, and will retrieve mail using pop3 from your current provider. Pop3proxy is one possibility. Another possibility is Fetchmail feeding into a local mail system.
I don't recall if you said how many users you have, but my impression is it is no more than a few thousand, perhaps only a few hundred. At this size it would be feasible to set up an account on the linux box for each user, and deliver mail into these accounts.
Basically you can use Fetchmail to grab the mail from your current pop3 server and stick it into the standard unix mail files for each user on the system. Then you can use a pop3 server on the linux box so your user can grab their mail out of these accounts. SA would be in the middle of that process, probably something like Fetchmail->procmail->SA->mailbox->pop3server.
You users don't need actual access to these accounts, or even know that they exist, and I think you can set them up as no login. All the users will have to do is change the hostname in their pop3 mail configuratios for where they grab mail. Unless you want to run outbound through SA also, they won't have to change the current smtp info pointing to your external provider.
This is essentially how we have things set up here.
Loren
----- Original Message -----
From: Jesse Shumaker
To: users@spamassassin.apache.org
Sent: Wednesday, July 06, 2005 11:07 PM
Subject: Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Let me try and summarize what I have recieved from all these e-mails as well as put together myself. Then you guys could give me some feedback if I'm on the right trail. What I need to do is install SpamAssassin w/pop3proxy on a linux box. Then setup the pop3proxy to point to my external pop3 server. On the client side I will need to setup each client's login to include their login name and the SpamAssassin/pop3proxy server (I'm not sure if I can only do this if I use the SAproxy utility for windows). Thats how I understand this should work. Now configuring this is another situation. How does it look to you guys? I have just noticed that there are a lot of utilities and stuff to use and am trying to piece it all together.
thanks
On 7/6/05, Jesse Shumaker <je...@gmail.com> wrote:
So you must have SAproxy on each client to do this? I know that is another product that I have heard of. If so do you have a download link where I can get SAproxy? If that is just the name you are calling the SpamAssassin proxy it looks like all I would need to do is specify the destination server in the login box and I'm set. All I have to do on the server end is setup the POP3proxy. Is this correct?
On 7/6/05, Paolo Cravero as2594 < pcravero@as2594.net > wrote:
Jesse Shumaker wrote:
Hi
> This looks good and I think I may try this perl module. It seems that
> it's geared towards a single workstation and not a network of machines.
> They say that you point your client to localhost, which means that each
> machine must have this installed. How are you guys running this so that
> you can have one centralized SA server? Also, how does the SA box
> authenticate with the ISP's POP servers for each e-mail client? In my
> organization each user has their own password and username for their
> e-mail account.
We installed it on a linux box with SA, and run it as a deamon. It
supports concurrent connections, altought we haven't tested it
thoroughly (hundreds of simultaneous connections...). So, rather than
installing it locally on each machine, use a shared POP proxy.
The client sends SAproxy the user/password, that then SAproxy submits to
the remote server. It is a proxy for POP3 protocol (no support for
POP3*S*), just that before sending the message to the client it is
scanned by SA.
It is also very flexible, since the destinaton server has to be
specified as part of the login string (paolo@domain.com#pop.domain.com
to retrieve mail with login paolo@domain.com from pop.domain.com
server): your colleagues can use the same proxy box for retrieving mail
from other POP3 accounts as well.
PC
--
| QRPp-I #707 + www.paolocravero.tk + I QRP #476 |
| SpamAssassin-based email antispam/antivirus solutions |
\ Italian/English-to/from-Croatian translations /
\ Skype: pcravero /
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by jdow <jd...@earthlink.net>.
No, it doesn't. We go fetchmail to procmail to mailbox and local POP3
server. AV filtering is done on the local machines via a standard AV
tool that is maintained up to date automatically. I don't trust tools
like ClamAV to be as up to the minute as the email scanners. (Besides,
SA filters here as combined with Earthlink's AV filters, leave me with
no spam getting through except to the spam mailbox which gets discarded
mostly unread.
{^_^} (I'm doing Loren's mini-ISP service here locally pullout our
mail down as described.)
----- Original Message -----
From: "Jesse Shumaker" <je...@gmail.com>
Loren,
So with doing it this way and setting up user accounts for each e-mail
account on the linux box and using Fetchmail which is installed on the Linux
box to grab each users mail from the ISP, Procmail will act as the pop3
server to allow these users to grab their mail internally from the linux
box, and SpamAssassin would filter all the spam due to being installed on
the central Linux box? Does your organization use ClamAV to remove filter
virus's from the e-mail as well?
Thanks a lot for this.
On 7/7/05, Loren Wilton <lw...@earthlink.net> wrote:
>
> I don't immediately see that anyone more knowledgable replied, so I'll
> toss out some possibilities/confirmations:
> Yes, you need something like a Linux box. It will run SA, and will
> retrieve mail using pop3 from your current provider. Pop3proxy is one
> possibility. Another possibility is Fetchmail feeding into a local mail
> system.
> I don't recall if you said how many users you have, but my impression is
> it is no more than a few thousand, perhaps only a few hundred. At this
size
> it would be feasible to set up an account on the linux box for each user,
> and deliver mail into these accounts.
> Basically you can use Fetchmail to grab the mail from your current pop3
> server and stick it into the standard unix mail files for each user on the
> system. Then you can use a pop3 server on the linux box so your user can
> grab their mail out of these accounts. SA would be in the middle of that
> process, probably something like
> Fetchmail->procmail->SA->mailbox->pop3server.
> You users don't need actual access to these accounts, or even know that
> they exist, and I think you can set them up as no login. All the users
will
> have to do is change the hostname in their pop3 mail configuratios for
where
> they grab mail. Unless you want to run outbound through SA also, they
won't
> have to change the current smtp info pointing to your external provider.
> This is essentially how we have things set up here.
> Loren
>
> ----- Original Message -----
> *From:* Jesse Shumaker <je...@gmail.com>
> *To:* users@spamassassin.apache.org
> *Sent:* Wednesday, July 06, 2005 11:07 PM
> *Subject:* Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
>
> Let me try and summarize what I have recieved from all these e-mails as
> well as put together myself. Then you guys could give me some feedback if
> I'm on the right trail. What I need to do is install SpamAssassin
> w/pop3proxy on a linux box. Then setup the pop3proxy to point to my
external
> pop3 server. On the client side I will need to setup each client's login
to
> include their login name and the SpamAssassin/pop3proxy server (I'm not
sure
> if I can only do this if I use the SAproxy utility for windows). Thats how
I
> understand this should work. Now configuring this is another situation.
How
> does it look to you guys? I have just noticed that there are a lot of
> utilities and stuff to use and am trying to piece it all together.
>
> thanks
>
> On 7/6/05, Jesse Shumaker <je...@gmail.com> wrote:
> >
> > So you must have SAproxy on each client to do this? I know that is
> > another product that I have heard of. If so do you have a download link
> > where I can get SAproxy? If that is just the name you are calling the
> > SpamAssassin proxy it looks like all I would need to do is specify the
> > destination server in the login box and I'm set. All I have to do on the
> > server end is setup the POP3proxy. Is this correct?
> >
> > On 7/6/05, Paolo Cravero as2594 < pcravero@as2594.net > wrote:
> > >
> > > Jesse Shumaker wrote:
> > >
> > > Hi
> > >
> > > > This looks good and I think I may try this perl module. It seems
> > > that
> > > > it's geared towards a single workstation and not a network of
> > > machines.
> > > > They say that you point your client to localhost, which means that
> > > each
> > > > machine must have this installed. How are you guys running this so
> > > that
> > > > you can have one centralized SA server? Also, how does the SA box
> > > > authenticate with the ISP's POP servers for each e-mail client? In
> > > my
> > > > organization each user has their own password and username for their
> > >
> > > > e-mail account.
> > >
> > > We installed it on a linux box with SA, and run it as a deamon. It
> > > supports concurrent connections, altought we haven't tested it
> > > thoroughly (hundreds of simultaneous connections...). So, rather than
> > > installing it locally on each machine, use a shared POP proxy.
> > >
> > > The client sends SAproxy the user/password, that then SAproxy submits
> > > to
> > > the remote server. It is a proxy for POP3 protocol (no support for
> > > POP3*S*), just that before sending the message to the client it is
> > > scanned by SA.
> > >
> > > It is also very flexible, since the destinaton server has to be
> > > specified as part of the login string (paolo@domain.com#pop.domain.com
> > > to retrieve mail with login paolo@domain.com from
pop.domain.com<http://pop.domain.com>
> > > server): your colleagues can use the same proxy box for retrieving
> > > mail
> > > from other POP3 accounts as well.
> > >
> > > PC
> > >
> > > --
> > > | QRPp-I #707 + www.paolocravero.tk <http://www.paolocravero.tk> + I
> > > QRP #476 |
> > > | SpamAssassin-based email antispam/antivirus solutions |
> > > \ Italian/English-to/from-Croatian translations /
> > > \ Skype: pcravero /
> > >
> >
> >
>
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Jesse Shumaker <je...@gmail.com>.
Loren,
So with doing it this way and setting up user accounts for each e-mail
account on the linux box and using Fetchmail which is installed on the Linux
box to grab each users mail from the ISP, Procmail will act as the pop3
server to allow these users to grab their mail internally from the linux
box, and SpamAssassin would filter all the spam due to being installed on
the central Linux box? Does your organization use ClamAV to remove filter
virus's from the e-mail as well?
Thanks a lot for this.
On 7/7/05, Loren Wilton <lw...@earthlink.net> wrote:
>
> I don't immediately see that anyone more knowledgable replied, so I'll
> toss out some possibilities/confirmations:
> Yes, you need something like a Linux box. It will run SA, and will
> retrieve mail using pop3 from your current provider. Pop3proxy is one
> possibility. Another possibility is Fetchmail feeding into a local mail
> system.
> I don't recall if you said how many users you have, but my impression is
> it is no more than a few thousand, perhaps only a few hundred. At this size
> it would be feasible to set up an account on the linux box for each user,
> and deliver mail into these accounts.
> Basically you can use Fetchmail to grab the mail from your current pop3
> server and stick it into the standard unix mail files for each user on the
> system. Then you can use a pop3 server on the linux box so your user can
> grab their mail out of these accounts. SA would be in the middle of that
> process, probably something like
> Fetchmail->procmail->SA->mailbox->pop3server.
> You users don't need actual access to these accounts, or even know that
> they exist, and I think you can set them up as no login. All the users will
> have to do is change the hostname in their pop3 mail configuratios for where
> they grab mail. Unless you want to run outbound through SA also, they won't
> have to change the current smtp info pointing to your external provider.
> This is essentially how we have things set up here.
> Loren
>
> ----- Original Message -----
> *From:* Jesse Shumaker <je...@gmail.com>
> *To:* users@spamassassin.apache.org
> *Sent:* Wednesday, July 06, 2005 11:07 PM
> *Subject:* Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
>
> Let me try and summarize what I have recieved from all these e-mails as
> well as put together myself. Then you guys could give me some feedback if
> I'm on the right trail. What I need to do is install SpamAssassin
> w/pop3proxy on a linux box. Then setup the pop3proxy to point to my external
> pop3 server. On the client side I will need to setup each client's login to
> include their login name and the SpamAssassin/pop3proxy server (I'm not sure
> if I can only do this if I use the SAproxy utility for windows). Thats how I
> understand this should work. Now configuring this is another situation. How
> does it look to you guys? I have just noticed that there are a lot of
> utilities and stuff to use and am trying to piece it all together.
>
> thanks
>
> On 7/6/05, Jesse Shumaker <je...@gmail.com> wrote:
> >
> > So you must have SAproxy on each client to do this? I know that is
> > another product that I have heard of. If so do you have a download link
> > where I can get SAproxy? If that is just the name you are calling the
> > SpamAssassin proxy it looks like all I would need to do is specify the
> > destination server in the login box and I'm set. All I have to do on the
> > server end is setup the POP3proxy. Is this correct?
> >
> > On 7/6/05, Paolo Cravero as2594 < pcravero@as2594.net > wrote:
> > >
> > > Jesse Shumaker wrote:
> > >
> > > Hi
> > >
> > > > This looks good and I think I may try this perl module. It seems
> > > that
> > > > it's geared towards a single workstation and not a network of
> > > machines.
> > > > They say that you point your client to localhost, which means that
> > > each
> > > > machine must have this installed. How are you guys running this so
> > > that
> > > > you can have one centralized SA server? Also, how does the SA box
> > > > authenticate with the ISP's POP servers for each e-mail client? In
> > > my
> > > > organization each user has their own password and username for their
> > >
> > > > e-mail account.
> > >
> > > We installed it on a linux box with SA, and run it as a deamon. It
> > > supports concurrent connections, altought we haven't tested it
> > > thoroughly (hundreds of simultaneous connections...). So, rather than
> > > installing it locally on each machine, use a shared POP proxy.
> > >
> > > The client sends SAproxy the user/password, that then SAproxy submits
> > > to
> > > the remote server. It is a proxy for POP3 protocol (no support for
> > > POP3*S*), just that before sending the message to the client it is
> > > scanned by SA.
> > >
> > > It is also very flexible, since the destinaton server has to be
> > > specified as part of the login string (paolo@domain.com#pop.domain.com
> > > to retrieve mail with login paolo@domain.com from pop.domain.com<http://pop.domain.com>
> > > server): your colleagues can use the same proxy box for retrieving
> > > mail
> > > from other POP3 accounts as well.
> > >
> > > PC
> > >
> > > --
> > > | QRPp-I #707 + www.paolocravero.tk <http://www.paolocravero.tk> + I
> > > QRP #476 |
> > > | SpamAssassin-based email antispam/antivirus solutions |
> > > \ Italian/English-to/from-Croatian translations /
> > > \ Skype: pcravero /
> > >
> >
> >
>
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Loren Wilton <lw...@earthlink.net>.
I don't immediately see that anyone more knowledgable replied, so I'll toss out some possibilities/confirmations:
Yes, you need something like a Linux box. It will run SA, and will retrieve mail using pop3 from your current provider. Pop3proxy is one possibility. Another possibility is Fetchmail feeding into a local mail system.
I don't recall if you said how many users you have, but my impression is it is no more than a few thousand, perhaps only a few hundred. At this size it would be feasible to set up an account on the linux box for each user, and deliver mail into these accounts.
Basically you can use Fetchmail to grab the mail from your current pop3 server and stick it into the standard unix mail files for each user on the system. Then you can use a pop3 server on the linux box so your user can grab their mail out of these accounts. SA would be in the middle of that process, probably something like Fetchmail->procmail->SA->mailbox->pop3server.
You users don't need actual access to these accounts, or even know that they exist, and I think you can set them up as no login. All the users will have to do is change the hostname in their pop3 mail configuratios for where they grab mail. Unless you want to run outbound through SA also, they won't have to change the current smtp info pointing to your external provider.
This is essentially how we have things set up here.
Loren
----- Original Message -----
From: Jesse Shumaker
To: users@spamassassin.apache.org
Sent: Wednesday, July 06, 2005 11:07 PM
Subject: Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Let me try and summarize what I have recieved from all these e-mails as well as put together myself. Then you guys could give me some feedback if I'm on the right trail. What I need to do is install SpamAssassin w/pop3proxy on a linux box. Then setup the pop3proxy to point to my external pop3 server. On the client side I will need to setup each client's login to include their login name and the SpamAssassin/pop3proxy server (I'm not sure if I can only do this if I use the SAproxy utility for windows). Thats how I understand this should work. Now configuring this is another situation. How does it look to you guys? I have just noticed that there are a lot of utilities and stuff to use and am trying to piece it all together.
thanks
On 7/6/05, Jesse Shumaker <je...@gmail.com> wrote:
So you must have SAproxy on each client to do this? I know that is another product that I have heard of. If so do you have a download link where I can get SAproxy? If that is just the name you are calling the SpamAssassin proxy it looks like all I would need to do is specify the destination server in the login box and I'm set. All I have to do on the server end is setup the POP3proxy. Is this correct?
On 7/6/05, Paolo Cravero as2594 < pcravero@as2594.net > wrote:
Jesse Shumaker wrote:
Hi
> This looks good and I think I may try this perl module. It seems that
> it's geared towards a single workstation and not a network of machines.
> They say that you point your client to localhost, which means that each
> machine must have this installed. How are you guys running this so that
> you can have one centralized SA server? Also, how does the SA box
> authenticate with the ISP's POP servers for each e-mail client? In my
> organization each user has their own password and username for their
> e-mail account.
We installed it on a linux box with SA, and run it as a deamon. It
supports concurrent connections, altought we haven't tested it
thoroughly (hundreds of simultaneous connections...). So, rather than
installing it locally on each machine, use a shared POP proxy.
The client sends SAproxy the user/password, that then SAproxy submits to
the remote server. It is a proxy for POP3 protocol (no support for
POP3*S*), just that before sending the message to the client it is
scanned by SA.
It is also very flexible, since the destinaton server has to be
specified as part of the login string (paolo@domain.com#pop.domain.com
to retrieve mail with login paolo@domain.com from pop.domain.com
server): your colleagues can use the same proxy box for retrieving mail
from other POP3 accounts as well.
PC
--
| QRPp-I #707 + www.paolocravero.tk + I QRP #476 |
| SpamAssassin-based email antispam/antivirus solutions |
\ Italian/English-to/from-Croatian translations /
\ Skype: pcravero /
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Jesse Shumaker <je...@gmail.com>.
Let me try and summarize what I have recieved from all these e-mails as well
as put together myself. Then you guys could give me some feedback if I'm on
the right trail. What I need to do is install SpamAssassin w/pop3proxy on a
linux box. Then setup the pop3proxy to point to my external pop3 server. On
the client side I will need to setup each client's login to include their
login name and the SpamAssassin/pop3proxy server (I'm not sure if I can only
do this if I use the SAproxy utility for windows). Thats how I understand
this should work. Now configuring this is another situation. How does it
look to you guys? I have just noticed that there are a lot of utilities and
stuff to use and am trying to piece it all together.
thanks
On 7/6/05, Jesse Shumaker <je...@gmail.com> wrote:
>
> So you must have SAproxy on each client to do this? I know that is another
> product that I have heard of. If so do you have a download link where I can
> get SAproxy? If that is just the name you are calling the SpamAssassin proxy
> it looks like all I would need to do is specify the destination server in
> the login box and I'm set. All I have to do on the server end is setup the
> POP3proxy. Is this correct?
>
> On 7/6/05, Paolo Cravero as2594 <pcravero@as2594.net > wrote:
> >
> > Jesse Shumaker wrote:
> >
> > Hi
> >
> > > This looks good and I think I may try this perl module. It seems that
> > > it's geared towards a single workstation and not a network of
> > machines.
> > > They say that you point your client to localhost, which means that
> > each
> > > machine must have this installed. How are you guys running this so
> > that
> > > you can have one centralized SA server? Also, how does the SA box
> > > authenticate with the ISP's POP servers for each e-mail client? In my
> > > organization each user has their own password and username for their
> > > e-mail account.
> >
> > We installed it on a linux box with SA, and run it as a deamon. It
> > supports concurrent connections, altought we haven't tested it
> > thoroughly (hundreds of simultaneous connections...). So, rather than
> > installing it locally on each machine, use a shared POP proxy.
> >
> > The client sends SAproxy the user/password, that then SAproxy submits to
> > the remote server. It is a proxy for POP3 protocol (no support for
> > POP3*S*), just that before sending the message to the client it is
> > scanned by SA.
> >
> > It is also very flexible, since the destinaton server has to be
> > specified as part of the login string (paolo@domain.com#pop.domain.com
> > to retrieve mail with login paolo@domain.com from pop.domain.com<http://pop.domain.com>
> > server): your colleagues can use the same proxy box for retrieving mail
> > from other POP3 accounts as well.
> >
> > PC
> >
> > --
> > | QRPp-I #707 + www.paolocravero.tk <http://www.paolocravero.tk> + I QRP
> > #476 |
> > | SpamAssassin-based email antispam/antivirus solutions |
> > \ Italian/English-to/from-Croatian translations /
> > \ Skype: pcravero /
> >
>
>
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Jesse Shumaker <je...@gmail.com>.
OK. This is what I thought I needed to do. Just to clarify, SAproxy is the
same as pop3proxy.pl correct? I've looked around and can't find a download
for these. It looks like they have been discontinued. I saw that a new one
which is only windows based has sprung up called SpamFu. I need it to be
Linux based. Could you send me the perl files or the tar.gz of SAproxy or
pop3proxy.pl? so you don't need procmail for any of this, or a way to
process the mail. Only SpamAssassin and the SAproxy or pop3proxy.pl are
required? I have thought about integrating ClamAV into this so that
anti-virus is filtered as well. I really appreciate your help in all of
this.
As a side note I found a file called "pop3proxy-1.2.0.tar.gz". Is this the
correct proxy? I've looked at the original link you gave me and it's made
for windows, not linux. I can see the principles but still need the files to
test this out.
I don't mean to be difficult in all of this, I just want to understand the
process and make sure I know how to do things.
thanks
On 7/6/05, Paolo Cravero as2594 <pc...@as2594.net> wrote:
>
> Jesse Shumaker wrote:
> > So you must have SAproxy on each client to do this? I know that is
> > another product that I have heard of. If so do you have a download link
> > where I can get SAproxy? If that is just the name you are calling the
> > SpamAssassin proxy it looks like all I would need to do is specify the
> > destination server in the login box and I'm set. All I have to do on the
> > server end is setup the POP3proxy. Is this correct?
>
> Jesse,
> please see the link in my first reply. I believe the documentation of
> the software is complete enough.
>
> You need to install beforehand SpamAssassin on the box where you'll run
> SAproxy. Then install SAproxy and run it as a daemon. I know it works
> under Linux because I've done it, but it might work under other OSes
> provided they have Perl.
>
> Finally reconfigure each POP3 client to point to your server rather than
> your ISP's, and modify each login (in the client) to include ISP's POP3
> server address.
>
> Good luck,
> Paolo
>
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Paolo Cravero as2594 <pc...@as2594.net>.
Jesse Shumaker wrote:
Hi
> This looks good and I think I may try this perl module. It seems that
> it's geared towards a single workstation and not a network of machines.
> They say that you point your client to localhost, which means that each
> machine must have this installed. How are you guys running this so that
> you can have one centralized SA server? Also, how does the SA box
> authenticate with the ISP's POP servers for each e-mail client? In my
> organization each user has their own password and username for their
> e-mail account.
We installed it on a linux box with SA, and run it as a deamon. It
supports concurrent connections, altought we haven't tested it
thoroughly (hundreds of simultaneous connections...). So, rather than
installing it locally on each machine, use a shared POP proxy.
The client sends SAproxy the user/password, that then SAproxy submits to
the remote server. It is a proxy for POP3 protocol (no support for
POP3*S*), just that before sending the message to the client it is
scanned by SA.
It is also very flexible, since the destinaton server has to be
specified as part of the login string (paolo@domain.com#pop.domain.com
to retrieve mail with login paolo@domain.com from pop.domain.com
server): your colleagues can use the same proxy box for retrieving mail
from other POP3 accounts as well.
PC
--
| QRPp-I #707 + www.paolocravero.tk + I QRP #476 |
| SpamAssassin-based email antispam/antivirus solutions |
\ Italian/English-to/from-Croatian translations /
\ Skype: pcravero /
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Jesse Shumaker <je...@gmail.com>.
This looks good and I think I may try this perl module. It seems that it's
geared towards a single workstation and not a network of machines. They say
that you point your client to localhost, which means that each machine must
have this installed. How are you guys running this so that you can have one
centralized SA server? Also, how does the SA box authenticate with the ISP's
POP servers for each e-mail client? In my organization each user has their
own password and username for their e-mail account.
On 7/5/05, Paolo Cravero as2594 <pc...@as2594.net> wrote:
>
> Jesse Shumaker wrote:
>
> Jesse,
>
> > It would be just like a web proxy. The outlook clients are redirectd to
> > the spamassassin box which filters the e-mail and forwards/relays the
> > requests onto our ISP's e-mail servers. If you can assist me at all with
> > this I would be greatly appreciated.
>
> you can try this: http://mcd.perlmonk.org/pop3proxy/
>
> It is written in Perl and apparently works on Win and Linux boxes.
>
> I believe it is the one we're using in my organization. Very stable.
> Paolo
>
> --
> | QRPp-I #707 + www.paolocravero.tk <http://www.paolocravero.tk> + I QRP
> #476 |
> | SpamAssassin-based email antispam/antivirus solutions |
> \ Italian/English-to/from-Croatian translations /
> \ Skype: pcravero /
>
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Paolo Cravero as2594 <pc...@as2594.net>.
Jesse Shumaker wrote:
Jesse,
> It would be just like a web proxy. The outlook clients are redirectd to
> the spamassassin box which filters the e-mail and forwards/relays the
> requests onto our ISP's e-mail servers. If you can assist me at all with
> this I would be greatly appreciated.
you can try this: http://mcd.perlmonk.org/pop3proxy/
It is written in Perl and apparently works on Win and Linux boxes.
I believe it is the one we're using in my organization. Very stable.
Paolo
--
| QRPp-I #707 + www.paolocravero.tk + I QRP #476 |
| SpamAssassin-based email antispam/antivirus solutions |
\ Italian/English-to/from-Croatian translations /
\ Skype: pcravero /
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Kai Schaetzl <ma...@conactive.com>.
Jesse Shumaker wrote on Mon, 4 Jul 2005 23:59:51 -0700:
> Is there a way that I could setup a SpamAssassin box at each of my
> sites to filter each Outlook clients' outgoing and incoming mail?
outgoing: use Mailscanner and then forward to the smarthost of your ISP.
incoming: don't know, either talk to your ISP to use ETRN or use fetchmail
on this box to get the mail. I don't know how to get the fetchmailed mail
thru MailScanner, though. I remember having heard it's possible.
Do you have a steady connection and a static IP? In this case simply be
your own mailserver and stop using that ISP.
Kai
--
Kai Schätzl, Berlin, Germany
Get your web at Conactive Internet Services: http://www.conactive.com
IE-Center: http://ie5.de & http://msie.winware.org
Re: SpamAssassin w/POP3 & SMTP outsourced e-mail server...
Posted by Jesse Shumaker <je...@gmail.com>.
I am in a non-profit organization so we are very tight on money. A third
party solution may be out of the question, depending the cost. Would
Spamassassin have to grab all the e-mail from the ISP and then I would
configure each client to access the spamassassin to download their mail? If
there is a way to do this, with my situation, I would love to know. I'm not
quite clear on what you are saying in your last response.
"Setup an SA box, point your domain MX records at it, then forward the
emails back to your ISP for delivery. (complexity varies)"
How would this play out in my situation? How would the clients receive
e-mail this way?
On 7/5/05, Greg Allen <sa...@floridacpu.com> wrote:
>
> Spamassassin is for incoming email, not outgoing.
> You could.
> 1. Setup an SA box, point your domain MX records at it, then forward the
> emails back to your ISP for delivery. (complexity varies)
> 2. Do similar thing through a third party antispam company and save the
> headache.
>
> -----Original Message-----
> *From:* Jesse Shumaker [mailto:jesseshumaker@gmail.com]
> *Sent:* Tuesday, July 05, 2005 3:00 AM
> *To:* users@spamassassin.apache.org
> *Subject:* SpamAssassin w/POP3 & SMTP outsourced e-mail server...
>
> Here is my situation. Currently, our e-mail isn't managed within our
> organization. We have a third party ISP who is hosting the e-mail for us. We
> simply configure our Outlook clients to authenticate to their SMTP/POP
> servers. Is there a way that I could setup a SpamAssassin box at each of my
> sites to filter each Outlook clients' outgoing and incoming mail? I'm not
> sure if this is possible and I am a novice on the technology of e-mail.
> Here's how I see it working:
>
> It would be just like a web proxy. The outlook clients are redirectd to
> the spamassassin box which filters the e-mail and forwards/relays the
> requests onto our ISP's e-mail servers. If you can assist me at all with
> this I would be greatly appreciated.
>
> thanks
>
>