On Sat, 2005-08-27 at 00:11, Jonathan Berry wrote: > Okay, a lot of ISPs now block port 25 out to anything other than their > SMTP server. In some situations, it would be nice to circumvent this > to get to another SMTP server if one is not available. If your ISP can't keep their mail server running, find another ISP. > So what I had > though is to setup my FC4 linux box to listen for SMTP traffic on a > non-standard port. How is anything else going to know to send to the non-standard port? If you are have multiple clients on a local LAN, you can have your own mail server working on port 25 for local clients that won't be blocked by the ISP, and configure this server to forward through the ISP's server. > Actually, I could just have my hardware router > forward whatever port to 25 on the computer, so the non-standard port > part should be easy. It would be nice to have a workable solution > with as little as possible. Does anyone know of some way that I could > maybe take any traffic to my server on my chosen high port and forward > it along to my ISP's SMTP server on port 25? It sounds possible, but > sketchy enough to where it might not be. Any ideas? It is easy to do this either with iptables or xinetd's 'redirect' function, but I don't see the point here. If you have one email client, point it to the ISP. If you want a local server, use its smart_host feature to send everything outbound through the ISP. -- Les Mikesell lesmikesell@xxxxxxxxx
