Hello,
We have deployed a CAS array of 6 exchange servers. Total 2300 user mailboxes and 4000 shared mailboxes.
Recently after changing the load balancer , users are facing outlook popup prompting users to enter their credentials.
Any suggestion what kind of diagnostics logging can be done to indicate no issue on exchange / AD servers.
This issue was not observed immediately after the change but after 16 hours
Test mailbox access does not indicate any issues. Issue is not observed for all users. Currently 25 users logged incidents
Regards, Ajit