System: Exchange 2000, SP3
Setup: Front end server with OWA accessing backend servers.
Problem: I have problem that some (not all) of my users when they logon to
OWA, the logon page would pop up several times. After the user successfully
logs on he sees another logon page, and he can continue logging on several
times. He can also cancel the second or any successive logon page and he
will still be able to access his email.
This problem does not occur if the user connects to the backend server
directly. The front end server is only running Exhange 2000, there are no
other services running on it, i.e. AD, ISA, DNS, etc. To simplify the
trobleshooting, I did my testing on the OWA itself to eliminate compatiblity
issues with firewall/ISA/routers. This problem also occurs with any PC's
running on the same LAN as the OWA server.
The difficulty in determining this issue is that it does not affect all the
user accounts. On the same machine used to logon to OWA, I can logon fine
with one account, while another account have this problem. I have also
duplicated this same problem on multiple machines thinking it's an IE issue.
All machines are running Windows 2000 professional, Windows 2000 server or
Windows XP with IE6.