For kicks, here's an actual bounce message I received from AOL as a result
of one of those forge-the-return-address spams, where the forged address is
in my domain:
(See the attachment for clarity) It came like this, with a small text
attachment explaining why it bounced, and a second that was the headers of
the original message inbound to AOL, which showed the obviously forged
address in my domain.
Andrew 8)
Received: from omr-r09.mx.aol.com [152.163.225.154] by mail.bentall.com
(SMTPD32-8.02) id A5DA43100D0; Thu, 09 Oct 2003 06:42:50 -0700
Received: from localhost (localhost)
by rly-na02.mx.aol.com (8.8.8/8.8.8/AOL-5.0.0)
with internal id JAA13891;
Thu, 9 Oct 2003 09:42:44 -0400 (EDT)
Date: Thu, 9 Oct 2003 09:42:44 -0400 (EDT)
From: Mail Delivery Subsystem <[EMAIL PROTECTED]>
Message-Id: <[EMAIL PROTECTED]>
To: <snip>
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
boundary="JAA13891.1065706964/rly-na02.mx.aol.com"
Subject: Returned mail: User unknown
Auto-Submitted: auto-generated (failure)
This is a MIME-encapsulated message
--JAA13891.1065706964/rly-na02.mx.aol.com
--JAA13891.1065706964/rly-na02.mx.aol.com
Content-Type: message/delivery-status
--JAA13891.1065706964/rly-na02.mx.aol.com
Content-Type: text/rfc822-headers
--JAA13891.1065706964/rly-na02.mx.aol.com--
The original message was received at Thu, 9 Oct 2003 09:42:29 -0400 (EDT)
from [211.49.144.50]
*** ATTENTION ***
Your e-mail is being returned to you because there was a problem with its
delivery. The address which was undeliverable is listed in the section
labeled: "----- The following addresses had permanent fatal errors -----".
The reason your mail is being returned to you is listed in the section
labeled: "----- Transcript of Session Follows -----".
The line beginning with "<<<" describes the specific reason your e-mail could
not be delivered. The next line contains a second error message which is a
general translation for other e-mail servers.
Please direct further questions regarding this message to your e-mail
administrator.
--AOL Postmaster
----- The following addresses had permanent fatal errors -----
<[EMAIL PROTECTED]>
----- Transcript of session follows -----
... while talking to air-na04.mail.aol.com.:
>>> RCPT To:<[EMAIL PROTECTED]>
<<< 550 MAILBOX NOT FOUND
550 <[EMAIL PROTECTED]>... User unknown