We have a centralised OWA server providing webmail for all locations
in our organisation. This was up until yesterday configured as
Front End Exchange 2003 w/forms based authentication
Windows 2000 Server
Our sites in the US and UK had backend servers that were running
WIndows 2003 and Exchange 2003. Our Australian location is still
running Exchange 2000 and Windows 2000.
I Upgraded the central FrontEnd server to Windows 2003.
Now the US and UK mailboxes continue to logon correctly when users
enter their UPN. (Australia and UK are subdomains of the US).
However, Australian users cannot logon to OWA. They get an HTTP/1.1
500 Internal Server Error when they enter their UPN.
Directory Security has domain and Realm set to '\' for the Exchange
and Exchweb Virtual Directory.
DOes anyone have any suggestions?