> -----Original Message-----
> From: CentOS [mailto:centos-boun...@centos.org] On Behalf Of Pete Biggs
> Sent: Saturday, August 25, 2018 2:30 PM
> To: centos@centos.org
> Subject: Re: [CentOS] Mail has quit working
>
>
> > >
> > > On 08/25/2018 03:35 AM, TE Dukes wrote:
> > > > > Can't say that's what I expected. What about "getent hosts
> 127.0.0.1"?
> > > >
> > > > 127.0.0.1 localhost
> > >
> > > OK. /etc/hosts isn't being used. You indicated earlier that you had
> > > more hostnames in that file. They should show up there.
> > >
> > > Let's go back to pastebin. What are the contents of
/etc/nsswitch.conf
> > > and /etc/hosts, now?
> > >
> >
> > Link to pastebin:
> https://paste.fedoraproject.org/paste/97keKuhV4lMoLZ8DIrYT8w
>
> You are multiply defining localhost and localhost.localdomain. All
> there should be is:
>
> 127.0.0.1 localhost.localdomain localhost
> ::1 localhost6.localdomain6 localhost6
>
I changed my /etc/hosts to the above.
> But that's not the underlying issue, it's just a complication. What
> the 'getent hosts 127.0.0.1' is showing is that the system is either
> not retrieving host information from the /etc/hosts file or not
> retrieving it all. That same command on my system returns
>
> 127.0.0.1 localhost.localdomain localhost
>
> i.e. the line identical to the one in /etc/hosts. Yours doesn't. What
> does /etc/host.conf contain - does it have the line 'multi on' in it?
Yes
>
> >
> >
> > > Are you running nscd, nslcd, or sssd? If so, you may need to stop
them
> > > or flush their cache.
> > >
> >
> > None of the above are running
>
> Your nsswitch.conf files shows that you are retrieving information from
> sssd for users. (But not for hosts, so it's not relevant here)
>
> >
> > > What do you get if you "dig @localhost localhost +short". If that
> > > doesn't return a "localhost" address, then the name server that you're
> > > running has a broken configuration.
> >
> > ; <<>> DiG 9.9.4-RedHat-9.9.4-61.el7 <<>> @localhost localhost +short
> > ; (1 server found)
> > ;; global options: +cmd
> > ;; connection timed out; no servers could be reached
>
> Are you running your own named? (I thought you said you were - this
> output says you aren't.)
>
> P.
Yes, named is running.
Thanks!!
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