Hi, So now I have a working system that I can access from inside my own network as well Being a total noob it took me long enough to get here! Now I need some advise: Outgoing mail is not a problem but incoming mail is. I just don't receive anything. So I looked up all possible solutions and came to the conclusion that it had to have something to do with DNS. Turns out my ISP is blocking port 25. Which is fine as long as I can receive mail. Which I currently can't. They recommend that I set up mail DNS at NetworkSolutions where I have registered my domainname as follows: 10 server.mydomain.dom 20 mailrelay.myisp.dom Now I was thinking, there is a field called "relayhost" in main.cf for Postfix as well so perhaps I should use that instead. Any suggestions (and explanations why) as to which solution would be better? My ISP actually wants me to use the "smarthost" option for Postfix. How would that impact my setup (if at all)? Thanks in advance.