Re: domain names, was: hostname
On Mon 19 Feb 2018 at 12:28:03 (+0000), Jeremy Nicoll wrote:
> On Thu, 15 Feb 2018, at 16:21, Dan Purgert wrote:
>
> > > Later, once you understand how a local network works, you can come
> > > up with a theme. Or some convention that lets you identify the
> > > computer by its name. The name that you have chosen.
>
> Machine-naming makes sense to me - having done that with a variety
> of (blush) Windows machines in my LAN. I've toyed with versions of
> Linux, and used a few live-CD ones over the years, and I'm fairly sure
> that as well as being asked to supply a hostname I've also been asked
> to supply a domain value.
>
> What, on a home LAN, is that used for?
Nothing, with the possible exceptions of:
. avoiding this message at boot up:
Mon Feb 19 04:58:38 2018: [....] Starting MTA:hostname --fqdn did not return a fully qualified name,
Mon Feb 19 04:58:38 2018: dc_minimaldns will not work. Please fix your /etc/hosts setup.
. satisfying a broken smarthost¹,
. causing some discussion here.
However, even though bug #504427 has never been answered, I don't
think I'm seeing this message any more except on wheezy (as above).
So here I have:
$ cat /etc/mailname
alum
$ head /etc/hosts
# /root/hosts-1-local-template
# List of local hosts.
# Adjust the two lines for this host when installing.
# Check the IPv6 lines occasionally because they change them.
127.0.0.1 localhost
127.0.1.1 alum
192.168.1.1 router
192.168.1.2 roku2w
$
I've sometimes wondered what other people dream up as their
domainnames; that is, people who don't have a legitimate reason
to put something like example.com.
¹IOW check /var/log/exim4/mainlog that sending an email is successful.
Cheers,
David.
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