On the MAPI level, you will need to retrieve the PR_ACCOUNT property
(0x3A00001E) from the IMailUser object opened using the entry id returned by
IMAPISession::QueryIdentity().
If you are using Outlook 2007, you can use
Namespace.CurrentUser.AddressEntry.PropettyAccesso r to read the PR_ACCOUNT
property.

--
Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool
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"Jason Wang" wrote in message
...
Can anyone tell me how to retrieve domain user name after Exchange Email
account is retrieved from Windows registry outlook profile?