Half a year ago i had got Exchange 2013 with RPC over HTTP ( Outlook anywhere) as main protocol.
One day it failed for all external clients: outlook just wont connect,
or connects but after 1-3 hours if outside of our corporate network.
Testconnectivity showed RPC: 1818 CallCancelled
I ve tride everything but nothing helped to solve problem.
Ive migrated to Exchange 2019.
No cas or mailbox servers left from Exchange 2013.
For nearly a month everything was fine, but one day, suddenly
Outlook Anywhere failed again.
Just the same bug and same error RPC: 1818 CallCancelled.
Deployment: 2 Cas+Mailbox servers (both roles on each server) in DAG.
F5 big ip as router / firewall
SSL Bridging is ON on F5 , SSL offloading disabled in Exchange
Testconnectivity screenshot in attach.
What can i do and how to troubleshoot this bug?
Got any ideas?
Thx in advance.