Sync problems with Microsoft Exchange mail

About 2 weeks ago, I noted that my Exchange emails were not being downloaded/synced to my 2020 Mac mini with Apple silicon & the latest Ventura OS. I tried everything I read to no avail. Most of the suggestions regarding deleting certain library files didn't coincide with what I see on my. computer. Delete, re-add, complete reinstall of Ventura, wipe the disk, re-install then Time Machine..NADA. Then I made the mistake of updating Ventura on my Intel MacBook Pro and now THAT email doesn't work. I contacted my domain name Exchange provider and they have no reported issues. If I forward my Exchange mail to my Comcast account or my iCloud email account...no issues. So..the issue MUST be with Mac Ventura & an Exchange sync issue. This is very frustrating as all of my Rules are negated with the forwarding. GRRRR! Does anyone have valid suggestions?