> -----Original Message-----
> From: CentOS [mailto:centos-boun...@centos.org] On Behalf Of Pete Biggs
> Sent: Saturday, August 25, 2018 8:00 AM
> To: centos@centos.org
> Subject: Re: [CentOS] Mail has quit working
>
>
> > >
> > > > > Can you reach localhost by "normal" means?
> > > > > telnet localhost 25
> > > >
> > > > I cannot.
> > >
> > >
> > > Can you share the specific output of the command? It might help. From
> > > what you've told us, localhost resolves to the IPv6 local address, and
> > > that address is present on your "lo" device. You *should* be able to
> > > connect. The type of error might indicate what is still wrong with
the
> > > system.
> > >
> >
> > Trying 71.28.79...
> > telnet: connect to address 71.28.79.87: Connection timed out
> >
>
> So are you saying that if you do 'telnet localhost 25' it actually
> tries to connect to '71.28.79.87'?
>
Yes
> If so, then that seems to indicate that host lookups are still being
> done primarily through DNS and it isn't looking in your /etc/hosts
> file.
>
> What happens if you do
>
> telnet 127.0.0.1 25
>
It connects to Postfix
> what about
>
> telnet ::1 25
>
It connects to Postfix also.
Thanks!
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