I don't know how to ask this question because I've gone through hundreds of lines of configuration code. I'm trying to setup a mail server on my Ubuntu box. I found a tutorial here http://www.exratione.com/2012/05/a-mailserver-on-ubuntu-1204-postfix-dovecot-mysql/ which uses postfix, dovecot, mysql, php, apache. I'm also running nginx so I had to find a tutorial on how to get the two servers working together. I got to the point where the tutorial asks me to point my browser to https://mail.example.com/postfixadmin/setup.php but I get this error The server at mail.example.com can't be found, because the DNS lookup failed. Now I don't know where to look for the error or what configuration files to post here because if I posted them all this question would be 100 pages long. Maybe someone can guide me in the direction of where to look?

closed as off topic by mdpc, Ward, Khaled, Bryan, Jenny D Apr 8 '13 at 8:08

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  • They actually mean for you to use your own mailservername. Example.com is an example. – Jenny D Apr 8 '13 at 8:08
  • I do use my own server name. I just put example.com here. – mikeglaz Apr 8 '13 at 20:40

The server at mail.example.com can't be found, because the DNS lookup failed.

This indicates that there is no A or CNAME record in DNS for mail.example.com. You need to create that record and ensure that it's pointing to the IP of your server.

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