I set up a server with ISPConfig3 on Ubuntu 12.04 for a client using the Perfect Server Tutorial for BIND, Apache, Postfix, and ISPConfig3. Everything except for the mail seems to work fine. I am new to mail on Linux, so I'm not sure what to make of the mail log other than connection problems. Here's the link to the pastebin of my mail.log: http://pastebin.com/6EuQE4br
All I see are connections from localhost. Have you tried setting up an email account in ISPConfig and sending/receiving with an email client such as Outlook or Thunderbird?
I've got a test account set up and have been trying to mail between that and a test account I use with gmail.
Ok, seeing as how I have no clue what is wrong, and after looking into things a little more, I think there is a serious configuration error somehwere. If I telnet to 25 and ehlo localhost, I immediately get disconnected, both locally and remotely. I found a forum stating telnet can't be used with TLS, so I used the command they gave, and ehlo worked fine. I have, as far as I know, all of the proper ports open with ufw. I'm seeing some stuff in my syslog that looks like ufw rejections, so I'm going to put up some pastebins. /etc/postfix/main.cf: http://pastebin.com/ZVwJKZS0 /etc/dovecot/dovecot.conf: http://pastebin.com/gyDCBuAe /var/log/mail.log (this is only a portion from this morning, and includes a connection from gmail): http://pastebin.com/hRscQQ4L /var/log/syslog (again, from this morning, and where I see some stuff I don't quite get): http://pastebin.com/X0Fq4ebH Also, for a more specific reference, any non-default configuration was done using this Perfect Server How-TO: http://www.howtoforge.com/perfect-server-ubuntu-12.04-lts-apache2-bind-dovecot-ispconfig-3
