Hey guys...having some serious trouble with configuring Exchange Server 2013 on Server 2012 for sending and receiving emails to and from the internet.
Sending and receiving internally works great. However, Comcast blocks port 25 and running the MX record check over at DNSstuff.com reports that the MX record points to the mail server at the correct public IP address, but it cannot establish any SMTP connections.
Trying to reconfigure my send and receive connectors EMC Powershell have failed using ports 587 and 465.
Is there anyway that I can still use my .com domain and circumvent the blocked port?
I am out of ideas...