In article <43C65C4B.5010700@gmail.com>,
	Jan Danielsson <jan.danielsson@gmail.com> writes:
>    I assumed that this wouldn't mean anything other than that I would
> get a new IP, but I was (unpleasanly) surprised to notice that sendmail
> said something along the line of "unable to qualify my own domain name"
> when I restarted the system. Same messages poped up on the first console
> when my daily cron jobs started. After searching the net for suggestions
> I tried changing a line in /etc/hosts from:
> 
>    a.b.c.d            myhost
> 
> to
> 
>    a.b.c.d            myhost myhost.

Why do you need an entry in "/etc/hosts"? Their should be DNS entries
for your public IP address (or you will run into problems anyway).

> But I still only get the error message.

What does "/var/log/maillog" say?

	Kind regards

-- 
Matthias Scheler                                  http://scheler.de/~matthias/