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.
|stop Delivery and read receipts being generated||1||34|
|Sharing Contact Lists with external users||2||25|
|Setup DMARC / SPF / DKIM on Exchange 2010||3||25|
|ADFS: Allowing ActiveSync clients to use App Passwords||1||19|