Adding Signature based on header?

[Dhawal Doshy]

Dhawal Doshy wrote:
> Steve Freegard wrote:
>> Hi Dhawal,
>> Dhawal Doshy wrote:
>>> Steve Freegard wrote:
>>>> Hi Dhawal/Paul,
>>>>
>>>> Dhawal Doshy wrote:
>>>>> Has anyone on the list written a header based custom function that
>>>>> can be trivially modified for such a purpose?
>>>> No - but if one of you can mail me some examples - I have some code in
>>>> MailScanner that does something similar that I should be able to
>>>> modify and put on the Wiki as this would seem to be pretty useful in a
>>>> lot of cases.
>>> Would this be enough?? See the part "(Authenticated sender:
>>> dhawal at netmagicsolutions.com)"
>>>
>>> Return-Path: <dhawal at netmagicsolutions.com>
>>> Received: (qmail 2963 invoked from network); 3 Apr 2007 14:47:12 -0000
>>> Received: from db.netmagicians.com (202.87.39.111)
>>>   by netmagicsolutions.com with SMTP; 3 Apr 2007 14:47:12 -0000
>>> Received: from db.netmagicians.com (db.netmagicians.com [202.87.39.111])
>>>     (Authenticated sender: dhawal at netmagicsolutions.com)
>>>     by db.netmagicians.com (Postfix) with ESMTP id 0934B40109F
>>>     for <dhawal at netmagicsolutions.com>; Tue,  3 Apr 2007 20:15:26 +0530
>>> (IST)
>>> Message-Id: <20070403144528.0934B40109F at db.netmagicians.com>
>>> Date: Tue,  3 Apr 2007 20:15:26 +0530 (IST)
>>> From: dhawal at netmagicsolutions.com
>>> To: undisclosed-recipients:;
>>>
>>> Thanks a ton, Steve..
>>
>> I've done an initial version which is attached and that I have done some
>> basic testing with, it takes a list of trusted IPs and the regexps that
>> should be checked against the headers from the trusted IPs to see if the
>> connection is authenticated.
>>
>> Any problems - run set my($debug) = 1; and run MailScanner --debug to
>> see what it is doing.
> 
> Wow.. i'll be modifying this for "spam checks" as well since i need to 
> skip spam checks on authenticated mail.
> 
> Will test it completely and let you know..

Regex matching for the line "127.0.0.1 = Authenticated Sender: (.+)" in 
SignCleanMessages.conf is case sensitive, once i lowercased "Sender" to 
"sender", it appears to work as intended.. will test it out with the 
newer feature (ruleset evaluation within a Custom Function) and post 
more details..

thanks a lot,
- dhawal