iptables firewall rule for incoming mail

[MIke Brearley]

I have a mail server on the inside of my network and just put up a linux
firewall.

Mail is getting bounced back to the sender saying that the system is not
accepting mail. What do I need to do to get mail forwarded to my internal
e-mail server?

I've set up a firewall rule to forward incoming port 25 to my internal IP
address, but it's not working, the same rule works to forward incoming port
80 (internet) traffic to my internal server, but not e-mail.

HELP HELP HELP....

Thanks,
Mike

[MIke Brearley]

[mik...@hoplite.org]

Can you 'telnet localhost 25' on the mailserver? The default config only
listens on 127.0.0.1 and not external interfaces.

--
Michael P. Brininstool mik...@hoplite.org
"The whole aim of practical politics is to keep the populace alarmed
(and hence clamorous to be led to safety) by menacing it with an
endless series of hobgoblins; all of them imaginary." -- H.L. Mencken

[Stan Markham]

"MIke Brearley" <mbre...@rochester.rr.com> wrote in message news:<zKO6a.20094$%r1.1...@twister.nyroc.rr.com>...

> I have a mail server on the inside of my network and just put up a linux
> firewall.
>
> Mail is getting bounced back to the sender saying that the system is not
> accepting mail. What do I need to do to get mail forwarded to my internal
> e-mail server?

I'm running a dual homed mail server: eth1 is the inside and has very
few restrictions, the outside world (eth0) passes mail thru using:

iptables -A INPUT -p tcp -i eth0 --dport 25 -j ACCEPT #Open smtp
iptables -A INPUT -p udp -i eth0 --dport 25 -j ACCEPT

[yuke]

Are you using a dhcp or static ip address

"MIke Brearley" <mbre...@rochester.rr.com> wrote in message
news:zKO6a.20094$%r1.1...@twister.nyroc.rr.com...