I have recently migrated our Exchange to Exchange Online and started to move CRM mailboxes over to use Server-Side Synchronization.
After applying the default settings to use Server-Side Sync for both Incoming & Outgoing email, I then Tested & Enabled mailboxes and everything completed successfully and happy days.
However, now I am experiencing issues where users are not sending or receving email through CRM. I then go and check their Mailbox status and it either says Failure or Not Run. I Test & Enable the mailbox again and it completes successfully and they are able to carry on.
What gives?
