Hi Ralf!

On 2 Jul, Ralf Hildebrandt wrote:
> "Joachim F. Selinger" wrote:
>> I hope this is not an FAQ, but some UCE mails don't show any indication
>> of the actual recipient address in the headers when accepted by postfix
>> for a local user. Is there any switch or setting that we are missing in
>> our postfix setup that would cure this? Our users would like to know
>> the address through which they received the junk, but sometimes can't,
>> as the messages get delivered into a cyrus IMAP/POP folder.
>
> The headers are not used for delivery, only the envelope recipients are.
> That means that a spammer can forge the headers as he/she likes, as long
> as the evelope recipient is local to your system.

You didn't get my point. I do know, that the headers don't contain that
vital information in most cases from the sender, but 99/100 e-mails have
that information included by the one program that must know it, namely the
receiving SMTPD (here postfix). It must know the information in the
envelope and there (normally) includes it in a line like

Received: from mail.berliner-volksbank.de (mail.berliner-volksbank.de
[195.243.106.18]) by russian-caravan.cloud9.net (Postfix) with
ESMTP id 8E9AE2AB3C for <postfix-userspostfix.org>; Mon, 2 Jul 2001
04:30:40 -0400 (EDT)

This 'for <postfix-userspostfix.org>' part is the one i'm interested in.
Most mails I receive contain it and it was included by the receiving
postfix SMTPD.

I just realized that your mail to me (not the list) did also NOT contain
that part.

Maybe it is a parameter in our postfix setup? I haven't found any reason
why some mails contain it and others not.

Thanks for replying though!
Jocki

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