Avoid scanning outbound email?

[Vermyndax <ve...@red-abstract.com>]

Hi all... 

I'm using postfix/spamassassin/amavisd-new on Gentoo.  I do not use
amavisd-new to throw to spamassassin, instead use procmail.  I only use
amavisd-new to send to clamav.

I was wondering - what is the recommended practice to avoid scanning
outbound email that is leaving the network?  I've been adding users to the
local.cf whitelist, but if I add them by domain I am concerned that those
spammers that send spam and make it look like it is from your domain will be
whitelisted.  (You know the ones I mean... When you get a spam email that
says <spammer>@yourdomain.org even though that user doesn't exist on your
domain).

Thanks for any insight...

--JM

Re: Avoid scanning outbound email?

[Evan Platt <ev...@espphotography.com>]

At 10:58 AM 3/28/2004, you wrote:
>Hi all...
>
>I'm using postfix/spamassassin/amavisd-new on Gentoo.  I do not use
>amavisd-new to throw to spamassassin, instead use procmail.  I only use
>amavisd-new to send to clamav.
>
>I was wondering - what is the recommended practice to avoid scanning
>outbound email that is leaving the network?  I've been adding users to the
>local.cf whitelist, but if I add them by domain I am concerned that those
>spammers that send spam and make it look like it is from your domain will be
>whitelisted.  (You know the ones I mean... When you get a spam email that
>says <spammer>@yourdomain.org even though that user doesn't exist on your
>domain).


I'm also a newbie at SA, but SA only scans what YOU tell it to scan.

Simply don't have SA scan outgoing e-mail....

Or perhaps someone will educate me if I'm wrong....

Evan

Re: Avoid scanning outbound email?

[Duncan Hill <sa...@nacnud.force9.co.uk>]

On Sunday 28 March 2004 19:58, Vermyndax wrote:
> Hi all...
>
> I'm using postfix/spamassassin/amavisd-new on Gentoo.  I do not use
> amavisd-new to throw to spamassassin, instead use procmail.  I only use
> amavisd-new to send to clamav.
>
> I was wondering - what is the recommended practice to avoid scanning
> outbound email that is leaving the network?  I've been adding users to the

If you're using amavisd-new, you're probably already running a dual-postfix 
setup, where one copy listens on 25, and the other on 10025.

Two options:
Configure mail clients in the network to use port 10025.  You won't virus-scan 
outbound mail this way, and this can be considered a bad thing.

Bind a second IP to the machine, bind a second postfix instance to this second 
IP.  Set up whatever rules you want.  Tell mail clients to use that IP.

RE: Avoid scanning outbound email?

[ve...@red-abstract.com]

Hi Jason...

Yes, you're correct, and better yet, you're correct that I already have it
set up the way I want.  Silly me.  I checked by sending an outgoing test
and it was not scanned for spam...

Dunno what I was thinking!

> Procmail will only scan on incoming mail. So you shouldn't have any
> problem.
> I am assumming that you don't want to scan for spam, but would like to
> continue scanning for viruses.

RE: Avoid scanning outbound email?

[Jason Crowe <jc...@midwestglove.com>]

> I do not use amavisd-new to throw to spamassassin, instead use procmail. 

Procmail will only scan on incoming mail. So you shouldn't have any problem.
I am assumming that you don't want to scan for spam, but would like to
continue scanning for viruses.

Jason