Ports in Bold indicate SSL setup on the exchange server and on LDAP. Otherwise use ports un-bolded.
1. 80/443 to Exchange (mailbox synch, public folder access, free/busy info, shared folder access, quota management)
2. 53/389/636/3268/3269 to Global Catalog domain controller (Setup assistant, GAL, Password expiration notice)
3. 135 to Exchange (delegate management)
