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Article: 1654
From: Anthony Howe
Date: 2007-08-27 08:05:41 -0400
Subject: FYI: How to fix MS Exchange DSN/NDR/bounce message mangling...

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The following has just been brought to my attention and I just had to 
share this useful fix:

The default Exchange configuration with respect to Delivery Status 
Notifications aka Non-Delivery Reports aka bounce messages mangles DSN 
messages into some useless brain damaged format that loses useful 
diagnostic information such as original message headers, SMTP server 
responses, and possibly other useful information such as the 
postmaster's contact information of the SMTP server that rejected the 

To correct this BROKEN behaviour, modify the Exchange server registry 
with regedit:
Value: RenderDSNsAsMessages
Value Data: 1

See http://support.microsoft.com/kb/812806 for details.

The above appears also in a SnertSoft FAQ article for future reference.

Anthony C Howe          Skype: SirWumpus                    SnertSoft
+33 6 11 89 73 78         ICQ: 7116561      Sendmail Milter Solutions

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