This seems like it should be pretty simple, but I cannot convince this RV042 we just got to forward port 25 to our LAN mail server. Firmware version : 18.104.22.168 (Feb 12 2007 10:43:08) Here's how things are set up right now: LAN: 192.168.0.2 WAN1: 192.168.2.2 (connects to Actiontec GT701 DSL Modem on 192.168.2.1) WAN2: Disabled for the moment, although there is another identical Actiontec DSL modem that I'll hook back up once I get forwarding working.) The Actiontec modem has a static IP address from our ISP and I decided the easiest thing to do was to just set up 192.168.2.2 as the DMZ host for the DSL modem, that way all incoming connections are just sent straight to the RV042. On the RV042, I have port forwarding set up for SMTP (TCP/25) set to forward to 192.168.0.11 (our mail server IP address): SMTP TCP 25~25 192.168.0.11 Enabled I have also put in a firewall access rule to allow this traffic: smtp Allow SMTP  * Any 192.168.0.11 ~ 192.168.0.11 Always To test things, I SSH into a remote server and then attempt to use telnet to connect to our static IP addres on port 25. The connection always times out. The packets are clearly making it to the RV042 as evidenced by these entries in the firewall log: Jul 12 08:05:05 2007 Connection Accepted TCP 208.xxx.xxx.109:49061->192.168.0.11:25 on ixp1 But from there the packets just seem to be lost. I don't see any evidence in the mail server logs that it ever sees the connection attempt. Anyone have any suggestions on what I might be doing wrong? Port forwarding on our old Netgear router is working fine.