Re: [gentoo-user] Use of gethostname() and getdomainname()

[Etaoin Shrdlu]

On Saturday 1 December 2007, Kevin O'Gorman wrote:

> I've got my own domain and domain server.  I've just run into a
> problem about the appropriate settings for hosts and domains, and it's
> messing up a few things in my postfix setup.
>
> The gentoo instructions say to set /etc/conf.d/hostname to the host
> name only.  It gets passed to sethostname(2) unchanged by
> /etc/init.d/hostname. I did it.
> The gentoo instructions say to put a domain name, if needed, into
> /etc/conf.d/net.  It seems to get used in network setup.  I did it.
>
> Nothing seems to be set into whatever it is that setdomainname(2) is
> used for.
> My mailx mailer seems to put "localdomain" on the sender address when
> my crontab entries call it.  Maybe because it sees that
> getdomainname(2) comes up empty.
>
> What's the right way to set this up?  Should I just cobble my proper
> domain into setdomainname(2)?  Is there a right way?  Is there a
> better way?

Try adding the following line to /etc/hosts:

a.b.c.d  hostname.your.domain  hostname

of course, replacing a.b.c.d with your correct ip address.

I don't know whether this is related to your problem, but it usually 
solves the domainname: (none) problem. 
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