Configuration:
Windows 2003 AD Root and 2 child domains with trusts to NT 4.0. Exchange 2003 lives in 2 child domains. Exchange 5.5 lives in NT 4.0
Single Exchange 2003 / Exchange 5.5 Organization
Two Admin Groups each with a routing group
Front-End and one Back-end in Admin Group 1
Front-End and three Back-Ends in Admin Group2
Situation:
We are testing for migration from E5.5 to E2K3. All logons are by UPN to E2K3 mailboxes. A user can connect by FQDN to FE in Admin 1 (child domain 1)and get OWA mail from any server in the domain. The same is true for a user in Admin 2 (child domain 2). The problem is when a user from Admin 1 (child domain 1) tries to connect to FE of Admin 2 (child domain 2)to retrieve mail from child domain 2. The user gets 2 authentication boxes and then the following error message:
HTTP/1.1 503 Service Unavailable.
We have tried a mixture of permissions. The network is fully routed. No problem with DNS name resolution. We have been on hold with Microsoft all afternoon. What should we look for?
Windows 2003 AD Root and 2 child domains with trusts to NT 4.0. Exchange 2003 lives in 2 child domains. Exchange 5.5 lives in NT 4.0
Single Exchange 2003 / Exchange 5.5 Organization
Two Admin Groups each with a routing group
Front-End and one Back-end in Admin Group 1
Front-End and three Back-Ends in Admin Group2
Situation:
We are testing for migration from E5.5 to E2K3. All logons are by UPN to E2K3 mailboxes. A user can connect by FQDN to FE in Admin 1 (child domain 1)and get OWA mail from any server in the domain. The same is true for a user in Admin 2 (child domain 2). The problem is when a user from Admin 1 (child domain 1) tries to connect to FE of Admin 2 (child domain 2)to retrieve mail from child domain 2. The user gets 2 authentication boxes and then the following error message:
HTTP/1.1 503 Service Unavailable.
We have tried a mixture of permissions. The network is fully routed. No problem with DNS name resolution. We have been on hold with Microsoft all afternoon. What should we look for?
