I have a new SBS2008 installed and setup to be able to access from the Internet. I used all wizards to connect to the Internet and setup your Internet address.
I have a firewall on the front of the network that is port forwarding. I have setup SMTP port forwarding for port 25 to the server.
Here is the status:
I can send from Exchange to any public email address. My MX records are setup and resolving correctly. I am not on any blacklists.
I cannot receive any mail. I thought it might be the firewall, so I got on the local LAN and performed a telnet on port 25.
Connecting To 192.168.50.120...Could not open connection to the host, on port 25
: Connect failed
Microsoft Exchange Transport is installed? Thoughts? I am at a loss ATM.