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.
|Google Apps blocking email?||26||86|
|Inheriting Gmail contacts into Outlook?||2||61|
|Why is a friend getting emails from me from email addresses I don't own?||2||59|