Which two conditions must be met for a successful enterprise activation process? (Choose two.) | Blackberry

A. Port 4101 on the firewall must be open.
B. Email messages must go to the BlackBerry Enterprise Server adminstrator's inbox.
C. Attachments with the .dat extension must be allowed.
D. Message delivery from BlackBerry.net must be unrestricted.
E. All PIM databases must be cleared using the backup and restore tool.

Answer: C,D