I had to change out servers LAN IP address and now we cannot receive email. We're not receiving a connection on port 25 now. We have the Windows Firewall on the server turned off and I thought all I would have to do is change the port forwarding on the firewall/modem to forward port 25 to the new IP address. Did I miss a step? We can send email. Our WAN IP and MX records have not changed just the Internal IP of the mail server.