Problem forwarding port 25 to Mail server (through router & pix)

[prince.ibe]

I have a Mail Server behind Firewall. With an ipcop firewall connected and port 25 forwarded to the mail server ip, the exchange server works perfectly.

Now I have a combination of Cisco router and PIX. I cannot seem to be able to configure the pix and router to allow smtp traffic to the mail server. HELP!

Internet -->Cisco 3700 --> Pix 515E --> Mail Server

What do I do to get the router and the pix to forward port 25 to the Mail Server.

Detail - http://pivweb.net/fun/Network.jpg

Thanks

[prince.ibe]

I did some tweaking on the config used nmap to test the ports. Result now shows that port 25 is open but I still get FILTERED from portqry on the mail server.

Result of nmap on the pix interface:-

PORT STATE SERVICE VERSION

23/tcp open telnet Cisco telnetd (IOS 6.X)

25/tcp open tcpwrapped

80/tcp open tcpwrapped

81/tcp open tcpwrapped

110/tcp open tcpwrapped

Result of nmap on the router interface:-

PORT STATE SERVICE VERSION

23/tcp open telnet Cisco IOS telnetd

25/tcp open tcpwrapped

80/tcp open http Cisco IOS administrative httpd

81/tcp open tcpwrapped

110/tcp open tcpwrapped

Command used: nmap -sT -sV -p 1-120 -v -PN x.x.x.x

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What does tcpwrapped mean?