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From "Benny Pedersen" ...@junc.org>
Subject Re: Multiple X-Envelope-From and SPF
Date Thu, 22 May 2008 16:16:10 GMT

On Fri, May 9, 2008 08:55, ram wrote:
>
> On Fri, 2008-05-09 at 01:44 +0200, Benny Pedersen wrote:
>> On Thu, May 8, 2008 23:19, mouss wrote:
>>
>> > configure postfix to replace previous ones
>> > /^(X\-Envelope\-From:.*)/   REPLACE X-$1
>>
>> envelope from can here be forged
>
> Precisely what I am afraid of. But the issue is whatever header I use
> for envelope-from all of them can be trivially forged
> I am trying replacing all the X-Envelope headers  before sending them to
> scan servers

what mta do you use ?

postfix uses Return-Path as envelope sender header


Benny Pedersen
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