SOLVED All emails to one domain bounced back

DvictorL

Registered
Apr 25, 2017
2
0
1
USA
cPanel Access Level
Root Administrator
I am having a problem where we can email to any domain except one. All of our email accounts can email out to any and all domains except one, and we cannot email to any accounts on that domain, I'll call it problemdomain.com.

When we send emails to problemdomain.com we get a bounce back message that reads:
Code:
=========================================================

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:

  [email protected]

    all hosts for 'problemdomain.com' have been failing for a long time (and retry time not reached)

==========================================================

There is a details.txt file attached to the bounce message that reads:

=========================================================
Reporting-MTA: dns; server.myserver.org

Action: failed
Final-Recipient: rfc822;[email protected]
Status: 5.0.0
===========================================================
I have contacted the IT help desk at problemdomain.com and they have said that they do not see where our server is even trying to contact theirs.

I have root access but very little experience and my host has been unable to assist. I don't see where I am getting any kind of error message.
 
Last edited by a moderator:

DvictorL

Registered
Apr 25, 2017
2
0
1
USA
cPanel Access Level
Root Administrator
Thank you for the replies. Our MX records are good. The problem is now fixed, however. I don't know how. Late last night I think our host support department finally figured out the problem. I still don't know what it was. At this point I don't care. Just glad it's working.
 

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,909
2,228
463
Hello,

I'm happy to see your hosting provider was able to address the issue. It's possible the IP address associated with the remote mail server was blocked by a firewall rule, but it's difficult to know for sure if the issue is already fixed.

Thank you.