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Posted to users@spamassassin.apache.org by messju mohr <me...@lammfellpuschen.de> on 2006/11/22 16:24:51 UTC

FP because of HELO_DYNAMIC_IPADDR

Hello,

mails from our host 80.237.202.55 (ds80-237-202-55.dedicated.hosteurope.de)
are tagged as HELO_DYNAMIC_IPADDR. Said IP is not dynamic, it's a
dedicated server hosted at german ISP (Host Europe GmbH).

How can we get our host removed from the list of DYNAMIC_IPS?

thanks in advance
messju

Re: FP because of HELO_DYNAMIC_IPADDR

Posted by John Rudd <jr...@ucsc.edu>.
John Andersen wrote:
> On Thursday 23 November 2006 00:32, Nigel Frankcom wrote:
>> t's worth hassling your ISP. If they want to sell 'business' packages
>> then an rDNS *should* be part of the deal (imo). If your current ISP
>> won't do it, switch to one that will, they are out there. I'm
>> surprised none seem to use it as a selling point.
> 
> Maybe in a large metro area you can switch,
> 
> Pretty hard to switch when there is but one or two available.
> 

In which case, you can use a hosting service.  Those are out there too, 
and some of them are fairly cheap.  And all you need to do is get a 
virtual host with good RDNS, and set it up as your outgoing mail relay 
(but make sure you don't set it up as an open relay).


Re: FP because of HELO_DYNAMIC_IPADDR

Posted by John Andersen <js...@pen.homeip.net>.
On Thursday 23 November 2006 00:32, Nigel Frankcom wrote:
> t's worth hassling your ISP. If they want to sell 'business' packages
> then an rDNS *should* be part of the deal (imo). If your current ISP
> won't do it, switch to one that will, they are out there. I'm
> surprised none seem to use it as a selling point.

Maybe in a large metro area you can switch,

Pretty hard to switch when there is but one or two available.

Yes, I think the reverse ought to come with the paid static,
but in most cases i've looked into, it doesn't.

I've been less than successful browbeating the techs on the other end
of the line into even trying to set this up.

(last one I talked to was configuring the static via a web based
utility, (from his windows machine, no less) and had no clue
about what he was actually setting or where the setting went.).

Further, I'm not sure it would help, because sorbs (and a few others) 
consider all IPs dynamic/dhcp until told otherwise by the netblock owner.
A local (statewide) ISP had to furnish detailed lists of all static blocks
to sorbs or they would continue to list everyone as dynamic

-- 
_____________________________________
John Andersen

Re: FP because of HELO_DYNAMIC_IPADDR

Posted by Nigel Frankcom <ni...@blue-canoe.net>.
On Thu, 23 Nov 2006 00:15:16 -0900, John Andersen <js...@pen.homeip.net>
wrote:

>On Wednesday 22 November 2006 22:04, Bob Proulx wrote:
>> But in this case it is an example of poor form for the forward and
>> reverse dns not to match.  If you are running a mail server this is
>> one of the things that should be set up properly for it.  When that is
>> fixed then the rule won't trigger on it as a side-effect of doing the
>> right thing.
>
>Well thats all fine and dandy for you to pontificate, but there
>are MANY bandwidth providers that do not let you control
>your reverse EVEN when you buy a static IP for your 
>mailserver.

This is an ongoing issue I have some sympathy with. Both sides of the
argument are valid. The problem is with the ISP's, after all it's not
a big deal to stick an rDNS in. I only found out my isp offered it
(free) when my IP popped up in SORBS. After some very lengthy calls it
got resolved.

It's worth hassling your ISP. If they want to sell 'business' packages
then an rDNS *should* be part of the deal (imo). If your current ISP
won't do it, switch to one that will, they are out there. I'm
surprised none seem to use it as a selling point.

Nigel

Re: FP because of HELO_DYNAMIC_IPADDR

Posted by John Andersen <js...@pen.homeip.net>.
On Wednesday 22 November 2006 22:04, Bob Proulx wrote:
> But in this case it is an example of poor form for the forward and
> reverse dns not to match.  If you are running a mail server this is
> one of the things that should be set up properly for it.  When that is
> fixed then the rule won't trigger on it as a side-effect of doing the
> right thing.

Well thats all fine and dandy for you to pontificate, but there
are MANY bandwidth providers that do not let you control
your reverse EVEN when you buy a static IP for your 
mailserver.

-- 
_____________________________________
John Andersen

Re: FP because of HELO_DYNAMIC_IPADDR

Posted by Bob Proulx <bo...@proulx.com>.
qqqq wrote:
> | messju mohr wrote:
> | > mails from our host 80.237.202.55 (ds80-237-202-55.dedicated.hosteurope.de)
> | > are tagged as HELO_DYNAMIC_IPADDR. Said IP is not dynamic, it's a
> | > dedicated server hosted at german ISP (Host Europe GmbH).
> | >
> | > How can we get our host removed from the list of DYNAMIC_IPS?
> | >
> | Change the PTR record. In this case, the rule isn't a blacklist, it's
> | simply looking at the hostname. To the rule, it looks like a typical
> | name associated with a dynamic-ip'ed DSL host..
> 
> In Messju's defense, why should he have to change anything?  "Our"
> rules are tagging a FP, and it should be upon "us" to fix it.  The
> above attitude is similar to SpamCop and other RBLs which don't
> admit that they have a problem tagging valid mail.

But in this case it is an example of poor form for the forward and
reverse dns not to match.  If you are running a mail server this is
one of the things that should be set up properly for it.  When that is
fixed then the rule won't trigger on it as a side-effect of doing the
right thing.  And unless I am mistaken this change has already been
made.

  host 80.237.202.55
  55.202.237.80.in-addr.arpa domain name pointer flyerheaven.de.

  host flyerheaven.de
  flyerheaven.de has address 80.237.202.55

That looks much better!

Bob

Re: FP because of HELO_DYNAMIC_IPADDR

Posted by qqqq <qq...@usermail.com>.
| messju mohr wrote:
| > Hello,
| >
| > mails from our host 80.237.202.55 (ds80-237-202-55.dedicated.hosteurope.de)
| > are tagged as HELO_DYNAMIC_IPADDR. Said IP is not dynamic, it's a
| > dedicated server hosted at german ISP (Host Europe GmbH).
| >
| > How can we get our host removed from the list of DYNAMIC_IPS?
| >
| Change the PTR record. In this case, the rule isn't a blacklist, it's
| simply looking at the hostname. To the rule, it looks like a typical
| name associated with a dynamic-ip'ed DSL host..

In Messju's defense, why should he have to change anything?  "Our" rules are tagging a FP, and it 
should be upon "us" to fix it.  The above attitude is similar to SpamCop and other RBLs which don't 
admit that they have a problem tagging valid mail.

Brian 


Re: FP because of HELO_DYNAMIC_IPADDR

Posted by Matt Kettler <mk...@verizon.net>.
messju mohr wrote:
> Hello,
>
> mails from our host 80.237.202.55 (ds80-237-202-55.dedicated.hosteurope.de)
> are tagged as HELO_DYNAMIC_IPADDR. Said IP is not dynamic, it's a
> dedicated server hosted at german ISP (Host Europe GmbH).
>
> How can we get our host removed from the list of DYNAMIC_IPS?
>   
Change the PTR record. In this case, the rule isn't a blacklist, it's
simply looking at the hostname. To the rule, it looks like a typical
name associated with a dynamic-ip'ed DSL host..


Re: [spamassassin] Re: FP because of HELO_DYNAMIC_IPADDR

Posted by messju mohr <me...@lammfellpuschen.de>.
On Wed, Nov 22, 2006 at 03:39:43PM +0000, Justin Mason wrote:
> 
> messju mohr writes:
> > mails from our host 80.237.202.55 (ds80-237-202-55.dedicated.hosteurope.de)
> > are tagged as HELO_DYNAMIC_IPADDR. Said IP is not dynamic, it's a
> > dedicated server hosted at german ISP (Host Europe GmbH).
> > 
> > How can we get our host removed from the list of DYNAMIC_IPS?
> 
> stop using a dynamic-looking string (like
> 'ds80-237-202-55.dedicated.hosteurope.de' -- note the '80-237-202-55'
> part) in the HELO string. it's more common to use something like
> mail.lammfellpuschen.de, for example.
> 
> --j.

Ah, thanks. I Just found the button to configure our RDNS.

thanks a lot!
messju