Postfix, outgoing mail problems, ssl problems

Otsego · #1 24th June 2006, 12:42 AM

Hi,

I'm all new to Fedora as I installed it on my server today. The plan is to create the average webserver. Mail, web, ftp, MySQL, etc. I got everything working except for mail. More specifically outgoing mail. I cannot connect remotely to the SMTP server. I have installed Postfix on Fedora Core 5 with help from yum install postfix. I have also uninstalled sendmail.

The problem is, my ISP is banning outgoing port 25, so I cannot connect to my server (the server is leased, so at another ISP not banning any ports). I used SSL at my old server (which used Plesk) and had no trouble with mail. However, when trying to connect via SSL to postfix it doesn't work, I guess there's something I have to set up. All that happens is that it gets connected, then drops out because of a timeout. A telnet domain.com 465 followed by a "HELO domain.com" doesn't give me any answer either. And a friend of mine telnetted to port 25 and didn't get any answer on HELO either.

Does anybody have a recent guide on how to set up postfix and fix ssl and make this thing work?

Mikie · #2 24th June 2006, 04:32 AM

I don't know abut postfix, but sendmail can be configured to use "smart" smtp relaying by your ISP's smtp server.

You should also check with your ISP if port 25 can be unblocked. Mine blocks it by default, but it can be disabled through my account control panel on their website. They don't advertise this though, so it's hard to find.

Otsego · #3 24th June 2006, 11:22 AM

Hi,

Thanks, but that's really not what I'm looking for. I need a clean SMTP server which can be accessible by anyone (that's authorized) without them having to configure a lot of stuff or simply use another SMTP server. Oh, and the ISP really hates my calls about opening ports

Mikie · #4 24th June 2006, 11:28 AM

I have a feeling you didn't understand me. You configure YOUR smtp server to use YOUR ISP's smtp server as a relay. It will allow you because you are on their net. Who ever is logging into your smtp server won't be any wiser which way is his mail going.

I hate calling my ISP to open my ports cause I'm paying for the net and i would like to have the full net, not just "most of it" but hey, that's the way things are.

Otsego · #5 24th June 2006, 11:35 AM

The server is not on my own network. As I mentioned earlier it is leased and in another country on a different network with another ISP. Thus my ISP will probably block the relay from my server. But even if it worked, it still wouldn't help me connecting to the SMTP server as MY port 25 is blocked and I need SSL to connect to it.

I also tried changing the port to which Postfix is listening to, but that didn't work either. I guess that my ISP is filtering the smtp packets or something. By SSL it's all encrypted and they can't really figure out what I'm transmitting and thus it can't be blocked. (Correct me if I'm wrong).