This article got me started.

http://smallbusiness.chron.com/whitelist-domain-office-365-74321.html

Here is what I did.

  1. whitelist_exchange_1
  2. whitelist_exchange_2
  3. whitelist_exchange_3
  4. whitelist_exchange_4
  5. whitelist_exchange_5
  6. whitelist_exchange_6

 

I hope this helps someone else out there…