Configure / Add a FQDN to /etc/hosts?

Question

I'm trying to set up iRedmail 0.8.5 and I keep getting this error.

root@danielbts11:~# cd /home/iRedMail-0.8.5

root@danielbts11:/home/iRedMail-0.8.5# bash iRedMail.sh

hostname: Name or service not known

hostname: Name or service not known

< ERROR > Please configure a fully qualified domain name (FQDN) in /etc/hosts before we go further.

Example:

127.0.0.1   mail.iredmail.org mail localhost

---

I have no clue on what to put in that file it's asking me to edit. My domain is dbatease.com and my ip is 74.91.123.215 running Ubuntu 13.04.

Solution

You edit the /etc/hosts file to contain fully qualified hostname:

74.91.123.215 mail.dbatease.com mail

That should made the trick

Comments

[Miguel Zavala]

didn't work, but I figured it out, [email protected] hostname

[Pasi Suominen]

Your mail server setup is somehow incorrect, in fqdn you are not pointing usernames, that is dns record, not email address. hostname --fqdn should match to that also.

[SkyRaT]

For systems without permanent IP one should add 127.0.1.1 hostname instead. This is actually a work around this bug: bugs.debian.org/cgi-bin/bugreport.cgi?bug=316099