I've got a weird issue with my CUC cluster (v15su2). I've tracked it down to about 12 user mailboxes (that I know of) out of about 2500. We utilize UMS which is synchronized to our google environment. All the tests and troubleshooting around UMS with...

Has anyone had any issues with NTP after upgrading to version 15? I just upgraded my test CER cluster from v14su3 to v15su1. I had an issue with the database not starting on the primary node after switching versions. But a reboot of the server fixed ...