XCON: IMC: Resent-from Headers Use Oldest Information

• Microsoft Exchange Server, version 4.0

SYMPTOMS

If incoming SMTP messages include multiple Resent headers, replies from Microsoft Exchange Server recipients might go to an incorrect recipient.

CAUSE

The Microsoft Exchange Internet Mail Connector (IMC) will use the oldest information in the Resent headers to place in the From field.

MORE INFORMATION

Multiple "Resent" headers in an incoming SMTP message might look like:

   Received: by host02.company.com
   id AA01441; Mon, 9 May 96 19:12:21 -0500
   Resent-Date: Mon, 9 May 96 19:12:20 -0500
   Resent-From: user3@host01.company.com
   Subject: Fw: Returned mail: Host unknown
   Resent-To: user4@microsoft.com
   Received: by host01.company.com
   id AA08664; Mon, 29 Apr 96 14:12:38 -0500
   Resent-Message-Id: <9604221912.AA08664@host01.company.com>
   Resent-Date: Mon, 29 Apr 96 14:12:37 -0500
   Resent-From: user2@host01.company.com
   Subject: Fw: Returned mail: Host unknown
   Resent-To: user3@host01.company.com
   Resent-Date: Mon, 29 Apr 96 12:39:20 -0500
   Resent-From: user1@host01.company.com
   Subject: Fw: Meeting at noon
   Resent-To: user2@host01.company.com
   Return-Path: <me@host01.company.com>
   Received: by host01.company.com
   id AA18773; Mon, 29 Apr 96 12:39:05 -0500
   Date: Mon, 29 Apr 96 12:39:05 -0500
   From: me <me@host01.company.com>
   Message-Id: <9604221739.AA18773@host01.company.com>
   Subject: Meeting at noon
   To: user1@host01.company.com

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 4.0. This problem was corrected in the latest Microsoft Exchange Server U.S. Service Pack. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

   S E R V P A C K