A new employee of mine has a Sprint HTC Touch cell phone and is trying to connect to his corporate email account using IMAP4. I have other users using IMAP4, POP3, Blackberry Ent. Server, and Exchange push (iPhones) without any problems. This is my only user with Sprint as well.
If I am in the ESM looking at the current connections for the IMAP4 protocol, I see for a second a new connection called <logging in> bounce off the machine. It is gone as quickly as it arrives. This user is able to connect his personal email account, which is running off his own Exchange server using ActiveSync. His phone will not let him add a second ActiveSync connection to my Exchange server.
I cannot figure out what's wrong and why IMAP will not work. The user is running Windows Mobile 6 on his cell phone.
I tried to add his email account to my Blackberry via IMAP and POP3, neither of which would work either. It keeps saying there is a problem validating the account. His account seems fine, as he is sending/receiving perfectly well from Outlook and can log in via Web Access without any problems. And the IMAP/POP3 servers seem ok as well since I have other users connecting through them daily.