oops. Make sure you use port 25 though: c:\> telnet mailserver.domain.com 25
----- Original Message ----- From: "Matthew Hellman" <[EMAIL PROTECTED]> To: "Paulo Andre" <[EMAIL PROTECTED]>; "Netfilter (E-mail)" <[EMAIL PROTECTED]> Sent: Monday, June 10, 2002 9:23 PM Subject: Re: iptables > try telnetting from the exchange server to a mail server on the Internet. > > ----- Original Message ----- > From: "Paulo Andre" <[EMAIL PROTECTED]> > To: "Netfilter (E-mail)" <[EMAIL PROTECTED]> > Sent: Monday, June 10, 2002 9:06 AM > Subject: iptables > > > > I have a Exchange server that needs to send mail out, the firewall > > (iptables) is set up as follows: > > > > iptables -A FORWARD -s (mail srv) -p tcp --dport 25 -j ACCEPT > > > > The mail server comes back with a "Host unreachable" error, and nslookup > and > > traceroute takes me to the destination fine. Anyone have any ideas...??? > > > > > > > > >
