Forum Discussion
AndyTuke1325
Apr 20, 2023Copper Contributor
Exchange hybrid connector validation
I have a newly setup hybrid from an Exchange 2016 single server on premises. The migration of mailboxes has run ok but mail is not flowing between 365 and on-premise and before we redirected the MX r...
mderooij
Apr 20, 2023MVP
The TlsCertName on those connectors, have they been configured and has the certificate recently been renewed and is there a mismatch between TlsCertName <I>X<S>Y, where X is not the actual issues any longer or Y mismatches the subject? Sometimes CA's change (intermediate) root certs and you have this phenomenom.