1. We have already been upgraded.
2. I have ran the test for my MX records, and have verifed my MX records are correct.
3. No error when connecting Mac to Exchange, but I do notice that after I connect my account that I get tons of errors that say "The Schedule Send & Receive All could not be successfully executed." Also in the Details for this error message it says "The account could not be found". Reguardless of this error message, my account still seems to sync eventually with Exhange, and then randomly several times a day I will be asked to enter in my password to authenticat to the exchange server.