[CentOS] Mail has quit working

[TE Dukes]

> -----Original Message-----
> From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of Nataraj
> Sent: Monday, July 23, 2018 9:47 PM
> To: centos at centos.org
> Subject: Re: [CentOS] Mail has quit working
> 
> On 07/23/2018 06:28 PM, tdukes at palmettoshopper.com wrote:
> >
> >
> > -------- Original Message --------
> > Subject: Re: [CentOS] Mail has quit working
> > From: Nataraj <incoming-centos at rjl.com>
> > Date: Mon, July 23, 2018 9:01 pm
> > To: centos at centos.org
> >
> > On 07/23/2018 03:39 PM, TE Dukes wrote:
> >> Hello,
> >>
> >> Mail has come to an abrupt stop. Running C7, postfix and dovecot. Using
> >> Roundcube as the client.
> >>
> >> Mail stopped working Saturday and I cannot figure was has happened. I
> have
> >> not touched this server except to upgrade packages. I believe Roundcube
> was
> >> updated maybe a week ago but know I was getting mail since then.
> >>
> >> Crond is no longer send mail. I checked /var/spool/mail as well as /Maildir
> >> in home directories. Zero byte files.
> >>
> >> Checked all logs and the only thing I could find was in /var/log/maillog :
> >> warning hostname localhost does not resolve to address 127.0.0.1
> >>
> >> I corrected that by changing inet_interfaces to localhost from all in
> >> postfix.cf
> >>
> >> When I try to log in with Roundcube, it just times out.
> >>
> >> I'm stuck!
> >>
> >> TIA for any suggestions!!
> >>
> >> _______________________________________________
> >> CentOS mailing list
> >> CentOS at centos.org
> >> https://lists.centos.org/mailman/listinfo/centos
> > More information would be helpful to troubleshoot this.  Try sending
> > output from:
> >
> > postfix status
> >
> > mailq
> >
> > Try telnetting to your smtp server and sending a message like this from
> > the local system:
> > substitute a valid user/domain on the mail from line and a valid email
> > address in your domain
> > on the rcpt to line. Do this, logged onto the mailserver.
> >
> > telnet localhost 25
> > helo mydomain.com (substitute a valid domain here)
> > mail from: <someuser at validdomain.com>
> > rcpt to: <youremailaddress at yourdomain.com>
> > data
> > From: someuser at validdomain.com
> > to: youremailaddress at yourdomain.com
> > subject: test
> >
> > This is a test mesage
> > .
> >
> > note: blank line between mail headers and body
> >
> > end data with line containing only '.'.
> >
> > Then check your maillog and send the output to the list.
> >
> >
> > Nataraj
> >
> > postfix status:
> >
> > postfix/postfix-script: the Postfix mail system is running: PID 5936
> >
> > mailq: Mail queue is empty
> >
> > Did the telnet localhost 25, it answered but not sure I understood you
> > what I needed to do.
> 
> Simply telnet to mailserver on port 25 and type what I've shown,
> substituting valid email addresses and valid addresses in your domain as
> indicated. You can use your own domain for the hello command, i.e. "helo
> mydomain.com".  Everything between the data command and the '.' is input
> to the data command.  After you type the '.' the message will be sent
> and should be delivered to the user on the "rcpt to" line.  You should
> see logging of successful delivery or errors in the maillog.
> 
> Nataraj
> 
> 

I can't get past From: <someuser at validdomain.com>  I also tried 'from', lower case.

Then get 221 2.7.0 Error: I can break rules, too. Goodbye.
Connection closed by foreign host.

Maybe I took too long? IDK