I have a problem with proxying OWA that doesn't work between sites.
This is my setup:
1: Site A/CAS/Mailbox/DAG
2: Site A/CAS
3: Site B/CAS/Mailbox/DAG
4: Site B/CAS
Between all server there is connection and connection with a VPN link between Site A and Site B. I have only one Mailbox that is on the DAG and mounted on Server 1.
Server 1 has OWA internal url set to the host and authentication to integrated. Sames goes for Server 3. External url is left empty. These servers are only internal.
Server 2 and 4 have both external url and internal url set to the same name https://webmail.comany.com/owa
. Log in is form based. They are both internet facing.
So to my problem. If a user logs in on Server 2 everything works fine since they are proxyed to the same site to server 1.
However if a user enter Server 4 they get a error message:
"A server configuration change is temporarily preventing access to your account. Please close all Internet Explorer windows and try again in a few minutes. If the problem continues, contact your helpdesk."
If I do a swithcover so that the mailbox is situated at Server 3 then it works great to log on to Server 4 and the same problem as before if you log on to Server 2.
Can somebody tell me where I can start looking for a solution? Don't really find any logs that helps me.