Microsoft Outlook 2010 RTM - "Send As" Broken

posted 23 Sep 2011, 01:17 by Tristan Self   [ updated 23 Sep 2011, 01:20 ]
Upon setting up a "send as" permission a mailbox for a user I got stuck. Even though the permissions on the user object were correctly setup for "Send As" when trying to send as a user with Outlook 2010 I kept on getting an error message.

After double and triple checking the permissions I concluded it must be caused by Outlook 2010. So I upgrade to SP1 and the problem went away, it appears it was a bug.