I have a Windows 2008 SBS running Exchange Server. We have some users that need to use POP3 to access their inboxes. All users except for one can do this. The one user keeps getting rejected for invalid login credentials. The login name is only 3 characters so it is not the long UPN issue.
Username and password works for OWA login and remote desktop login and the account can be connected to otherwise but not POP3.
Security audit log shows Success for the login when an attempt is made to connect yet Exchange still returns incorrect username/password.
Thanks in advance for your help.