PR_REDIRECTION_HISTORY vs PR_TRANSPORT_MESSAGE_HEADERS

Aug 8, 2013 at 5:50 PM
Hello,

our exchange server allows for receiving mails sent to an 'alias' address. I don't know yet the correct exchange term of this feature, but effectively mails sent to this address are accessible in the primary message store.
To evaluate the alias address, I could parse the data of PR_TRANSPORT_MESSAGE_HEADERS:
...
Subject: test
From: external user <external.user@somewhere.com>
To: <aliased_adress@here.com> // <-- not <primary_address@here.com>
Content-Type: multipart/mixed; boundary="..."
Return-Path: external.user@somewhere.com
...
I'd rely on the "To: <e@d>" string containing the linked / aliased address. I don't know if this may be subject to change and therefore I am looking for an atomic property holding this information.

In MFCMAPI, I stumbled across PR_REDIRECTION_HISTORY. Looking into its value , I can see exactly the needed aliased address, surrounded by some binary data.
So my question is, what it this property about and how is the data held by it defined?

Thank you very much.
Coordinator
Aug 8, 2013 at 6:00 PM
Looks like the property is documented here:
http://msdn.microsoft.com/en-us/library/office/cc815490.aspx
But it doesn't look like the format of the data is documented.
Aug 10, 2013 at 6:55 PM
Thanks for the response.
No, there is no format description. This seems to be an undocomented feature... so I'll stick to the smtp headers.