Message Header POP3 and MAPI

Posted on 2011-03-23
Last Modified: 2012-05-11

I have strange issuer, I have account with Primary email id and Alias as

Ii sent  email to and checked the Internet message header in MAPI account(Webmail, Outlook) the To filed in the header is and same email internet header when i checked in POP3 the To filed its primary email id

Can  any one tell me why the internet header changing in MAPI and POP3 are there any configuration setting need to do correct this.
Question by:Manoj Bojewar
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Accepted Solution

Barthax earned 250 total points
ID: 35230278
I believe this only happens when the e-mail originates from internally via Outlook/OWA - i.e., via MAPI.  If Exchange receives the message via MAPI, it is not yet an Internet-formatted e-mail and is instead stored according to MS' own internal formats.  Only at POP3 collection does the Internet message headers become formed and by this time the recipient's primary e-mail address is given to the To: field, not the alias.

Assisted Solution

by:Manoj Bojewar
Manoj Bojewar earned 0 total points
ID: 35230675
This is known issue with Exchange 2007.  Please see the below MS article for the same.

There is a bug in exchange 2007 and behavior changes from e2k3 to e2k7:

Author Closing Comment

by:Manoj Bojewar
ID: 36123160
its help me to fix the issue.

Author Comment

by:Manoj Bojewar
ID: 36109951
thanks for your help

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