update Urgent request re: mail server configuration....

dspahn · Guru Joined: 22 Jun 2006 Posts: 392

I apologize if this should go into unsupported software, but I am completely lost at this point in trying to set up a postfix mailserver. The last time I set up a mailserver, it was a qmail server, and that was 2 years ago. The qmail server is getting a number of bouncebacks from recipient systems that the MTA is of ill repute and that its messages will not be accepted. This forum provided great advice, to use (among others) postfix as a mail server. I have rebuilt this (formerly FC6) server to be a Gentoo server... and now I'm stuck. .Getting support at the Postfix site is a maze at best, and my issue really is fairly simple for anyone proficient at mail sever configuration. I want to setup Postfix to accept email from another machine (scanner) on the same subnet and relay it to the recipients requested by the scanner. The scanner is 192.168.1.3 and the Postfix server is 192.168.1.4.

First, how do I set the main.cf and master.cf files?
Second, how do I add a user to this mailserver as a sender?

Is there any other configuration I need to do?
I have spent the past 3 days researching this, and this forum is the only place I have left to turn for help.... I appreciate any advice.

Thanks!

Edit: I finally got the web interface with Postfixadmin to send mail... and after sending one mail successfully from a mail client, I started getting connection refusals reported by the mail client. Any idea what's going on?

kashani · mynetworks = 127.0.0.0/8 192.168.1.3/32

Let's see the output of postconf -n and that should make troubleshooting far easier.

In order to allow 192.168.1.3 relay email to your server I would add the IP address to mynetworks in your /etc/postfix/main.cf

dspahn · Guru Joined: 22 Jun 2006 Posts: 392

OK, I'll try that.
I did figure out adding a user- i turns out I was having trouble because of a bug/feature in postfixadmin. The workaround was to turn off automatic domain resolution.

What exactly does that /32 mean? I've seen the /24 and /8, but never a /32.

I also figured out why I could send from Postfixadmin but not from a test external client- I had not committed some changes to the inet interfaces variable, which I had set to 127.0.0.1 only, as part of a walkthrough during some of my troubleshooting. So far, I have been working in a test environment. I'm going to take the machine on site to go live shortly. Any configuration ideas to try to keep the address out of junk mailboxes?

dspahn · Guru Joined: 22 Jun 2006 Posts: 392

Thanks for your help- the mailserver is up and running... but I am feeling a little 'inadequate', as I cannot find the logs.
They are not in the normal locations, so I am guessing they are not being created. What do I need to do to enable the logging, or to find the location?

kashani · Posted: Thu Aug 21, 2008 5:28 pm Post subject:

You probably know that a /24 is 256 addresses. 32 bits - 24 bits = 8 bits = 256 numbers = 256 IP addresses. A /32 is a single IP address. You asked for one IP address so it's a /32.

Gentoo has a stupid default where it pipes everything into /var/log/messages. Add these lines to your /etc/syslog-ng/syslog-ng.conf file.