Fedora Users — Re: Running own mail server

I think you'll find that trying to run OUTGOING mail from your server willbe a continuous exercise in frustration

Before I started bouncing around the planet and decided to have my domainhosted, I was doing this, and ran into all the problems you described; mailbeing banned because of RBL's for netblocks of DSL/Cable Modem networks, thewhole nine yards. Very frustrating. But one system will accept your mailfrom the network you're on, that being your ISP's mail server.

Now, I can't couch for every ISP, but I was on a large cable serviceproviders network, and their servers (at least at the time) didn't care thatthey were relaying mail from mydomain.com, off to where ever it wasdestined. I was also fortunate in that they weren't blocking port 25inbound, which some do as well, to dissuade people from hosting mail serverson their home computer, and cut down on spam.

Probably, when you signed at the installation of your service, you agreedNOT to run a server on your connection either. If you do so, and set it upvery carefully to not be an open relay, etc. they may leave you alone. Igot away with it for three years, while others I knew at work, on the sameproviders service, had set up servers in a neglectful manner, and theydidn't make it a few months before they were on them to shut it down or havetheir service shut down... Lesson there seems to be that at least _some_providers will turn a blind eye to a properly configured system...

You could try, but nothing is definite, and the provider of course canchange the game, at any time, and put new road blocks in place withoutwarning to you, because of the nature of the service agreement. Andhonestly, some places hosting your site and mail for barely more than $5 amonth, it's hardly worth the hassle, although it can be quite a fun learningexperience if you are patient.