PFSense Firewall Not passing NAT/Access Rules

Our PFSense Firewall was passing several ports via the WAN IP/WAN ALIASES but all of a sudden has stopped passing any inbound traffic. Outbound traffic and IPSEC continues to work, but the ports we had open for emails (25 and 55025) and VNC (5900) no longer forward. I have attempted to recreate these port forwarding rules using the backup WAN (DSL) interface and this doesn't work either. We have rebooted the device and no additional rules have been created. The project is: Initial Milestone; restore NAT functionality to port 25 and 55025 so that we can receive emails to our inhouse Exchange server. Second Milestone; Backup configuration and upgrade system to most current/stable version of PFSense Third Milestone; Restore connection of Linux Samba File server so that we can access it with ADBind