Steve Harris

I can’t remember when it stopped working but nowadays you cannot use Microsoft Outlook to match an SMTP address to a user if it’s not the primary address. It is useful if you get the duplicate address exists error message of if you are simply trying to locate a mailbox. This one I keep forgetting so that I have some reference here is the graphical way of doing it:-

• Launch Active Directory Users and Computers from the start menu;
• Right click the domain and select Find;
• In the Find drop down list select Custom Search;
• Change to the Advanced tab and in the LDAP query field enter “proxyaddresses=smtp:name@yourdomain.com” (minus the double quotations);
• Click the Find Now button.

All being well you should now have your mystery mailbox.