Microsoft KB Archive/142436

= XFOR: SMTP Headers That the Exchange IMC Understands =

Article ID: 142436

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 4.0 Standard Edition

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This article was previously published under Q142436



SUMMARY
The Microsoft Exchange version 4.0 Internet Mail Connector (IMC) only understands the following header information of incoming messages sent from SMTP Hosts:

Received....

to:

from:

date:

subject:

reply-to:

Message-ID:

x-ms-attachment:

resend-to:

return-receipt-to:

encoding:

MIME version 1.0

content-type:

content-transfer-encoding:

content-disposition: ; this is for incoming mail only

Microsoft Exchange Server Service Pack 2 has added support for:

Resent-from:

Content-type: multipart/appledouble

Content-type: application/applefile

Encoding: x-binhex



MORE INFORMATION
When an SMTP Host connects to the Microsoft Exchange IMC, there are certain headers sent by the SMTP Host that the Microsoft Exchange IMC uses to determine the actions to perform. The headers listed above are the headers that the Microsoft Exchange IMC understands. If any other headers are received by the Microsoft Exchange IMC, the message will be accepted and the unknown headers will be ignored.

To save headers in the Microsoft Windows NT Event Log, start the Microsoft Exchange Administrator program, open the property page for the Microsoft Exchange IMC, choose the Diagnostic Logging tab, and set the Logging level to Maximum.

Additional query words: IMC HEADERS SMTP

Keywords: kbusage KB142436

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