Fixing “Target Principal Name is Incorrect” in Outlook

  • November 6, 2011 by Mr. S S.
To fix “Target Principal Name is Incorrect” error please configure your outlook's outgoing and incoming mail server to use instead of .

This applies to those using IMAP and are getting the above error message, no need to re-configure your outlook.

Also the above fix is only in one location, nothing else needs to be changed for your outlook configuration.

See this image : for what fields that need to be changed.