Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.
One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.
|Assistance Reading mail headers||9||48|
|SPF record to send mail from other server||15||58|
|What details will go in incase of non-activesync clients or if exchange details will need to be entered manually.||1||54|
|second athoritative domain||17||220|