[imp] Re: spamassassin and blocking lists

[Jan Schneider]

Zitat von Iain Pople <ip at brunny.com>:

> Michael M Slusarz wrote:
>> Quoting Iain Pople <ip at brunny.com>:
>>
>>> Michael M Slusarz wrote:
>>>
>>>>
>>>> Search the archives for a discussion of this previously.
>
> i've searched but can't find much. any links would be useful.
>
>>
>> Because you are not thinking of the problem in the correct way.  Received
>> headers are added at *every* server stop along the way. Thunderbird 
>> delivers as
>> follows:
>> Thunderbird client --> Mail server
>> One hop -- one header.
>>
>> IMP delivers as follows:
>> Web browser --> Web server --> Mail server
>> Two hops -- two headers.  This is our behavior.
>>
>
> I don't think the number of hops (and headers) is particularly
> important. The issue is that a header inserted from IMP triggers
> spamassassin whereas a header inserted by the mail server doesn't.
>
> E.g. The following header triggers spamassassin:
>
> Received: from CPE-203-45-11-59.vic.bigpond.net.au
> (CPE-203-45-11-59.vic.bigpond.net.au [203.45.11.59])
>      by webmail.brunny.com (IMP) with HTTP
>      for <iain at localhost>; Sun, 24 Oct 2004 10:21:07 +1000
>
> This one doesn't:
>
> Received: from cpe-203-45-11-59.vic.bigpond.net.au ([203.45.11.59]) by
> bwmam09.bigpond.com(MAM REL_3_4_2a 138/139363271) with SMTP id
> 139363271; Sun, 31 Oct 2004 14:35:01 +1000
>
> Note, the sending IP address is the same in both cases.
>
> I agree that the bug is most likely with spamassassin, but i'd like to
> know why.

Do you use an uptodate version of SpamAssassin? I know for sure that SA has
special rules for ages to lower spam points if a message is sent from IMP.

Jan.

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