dbfunk at engineering
Nov 7, 2009, 12:35 PM
Post #6 of 6
(172 views)
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Chris,
Do you understand that email has two different sets of recipient (To)
addresses?
One is the in the header "To:" (in your example
"To: <carnold[at]braham.k12.mn.us>") the other is called the envelope
recipient which shows up in your mail server logs and -may- also
be embedded in the "Received:" headers (in your example its the
"for <myemail[at]mail.server.com>;" bit).
The header "To:" address is just window dressing, does not play any part
in SMTP mail routing, and could be almost anything.
The envelope recipient is used during the SMTP transactions and controls
the mail routing and delivery. It -must- correspond to a valid
user or recipient on your mail system. Most correctly configured MTA
systems will only let a message in the front-door if it contains a valid
envelope recipient address.
If that address "myemail[at]mail.server.com" does not correspond to a valid
recipient on your mail system then you need to look into the zimbra
(postifx) configuration to see how to fix that.
If your concern is that that "To:" address does not correspond to a valid
recipient on your system then you're misunderstanding how email works.
Please search the archives of this list for a long-winded thread on
exactly this issue (header "To" not matching envelope recipient).
Dave
On Fri, 6 Nov 2009, Chris Arnold wrote:
> Hello list. Forgive me if this has been addressed before. I get email that
> is addressed to a user that is not even a user on the mail server or domain.
> We use zimbra 6 OSS which has builtin spamassassin and uses postfix. Here is
> a copy of the headers (with specific stuff changed or cut out):
>
> Return-Path: negro2078[at]hotmail.com
> Received: from mail.server.com (LHLO mail.server.com)
> (ip.of.server) by mail.server.com with LMTP; Fri, 6 Nov 2009
> 17:20:34 -0500 (EST)
> Received: from localhost (localhost [127.0.0.1])
> by mail.server.com (Postfix) with ESMTP id D732ABFF51
> for <myemail[at]mail.server.com>; Fri, 6 Nov 2009 17:20:33 -0500 (EST)
> X-Virus-Scanned: amavisd-new at mail.server.com
> X-Spam-Flag: NO
> X-Spam-Score: 2.346
> X-Spam-Level: **
> X-Spam-Status: No, score=2.346 tagged_above=-10 required=6.6
> tests=[BAYES_05=-1.11, HTML_MESSAGE=0.001, URIBL_BLACK=1.955,
> URIBL_OB_SURBL=1.5] autolearn=no
> Received: from mail.server.com ([127.0.0.1])
> by localhost ( mail.server.com [127.0.0.1]) (amavisd-new, port 10024)
> with ESMTP id WTkUevQdagxY for <myemail[at]mail.server.com>;
> Fri, 6 Nov 2009 17:20:29 -0500 (EST)
> Received: from cdptpa-imtalb.mail.rr.com (cdptpa-imtalb.mail.rr.com
> [75.180.132.34])
> by mail.server.com (Postfix) with ESMTP id ED71CBFE1E
> for <myemail[at]mail.server.com>; Fri, 6 Nov 2009 17:20:28 -0500 (EST)
> Received: from cdptpa-mxlb.mail.rr.com ([10.127.255.82])
> by cdptpa-imta07.mail.rr.com with ESMTP
> id <20091106222028261.ETSN29511[at]cdptpa-imta07.mail.rr.com>
> for <myemail[at]mail.server.com>; Fri, 6 Nov 2009 22:20:28 +0000
[snip..]
> X-Originating-IP: [113.66.28.156]
> From: =?iso-8859-1?B?QU5UT05JTyBKT1PJIGZsb3JlcyBjYXJtb25h?=
> <negro2078[at]hotmail.com>
> To: <carnold[at]braham.k12.mn.us>
> Subject: RE # Business
> Date: Fri, 6 Nov 2009 22:20:25 +0000
>
> Is it possible to stop this?
--
Dave Funk University of Iowa
<dbfunk (at) engineering.uiowa.edu> College of Engineering
319/335-5751 FAX: 319/384-0549 1256 Seamans Center
Sys_admin/Postmaster/cell_admin Iowa City, IA 52242-1527
#include <std_disclaimer.h>
Better is not better, 'standard' is better. B{
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