Re: [Sonic #6410040] keep getting bounces when sending to a particular domain

[http://dummy.us.eu.org/robert (Robert )]

Oddly, I did not see the test email that you sent to
"http://dummy.us.eu.org/noelleg";.  Did you eventually get a bounce?

I just now tested sending to http://dummy.us.eu.org/noelleg using the
direct SMTP method and it worked perfectly.  I also tested through
the mail.sonic.net SMTP server and again I got the bounce -- which I
include here.

Is it possible that the DNS records for the unumhumbrewing.com are
incorrect?  (Just a reminder that sending from Yahoo worked fine, but
it's possible that it's more lenient w.r.t. DNS records.)

-------------------------------------------------------------------------------

The original message was received at Sat, 29 May 2021 09:32:05 -0700
from 173-228-7-7.dsl.static.fusionbroadband.com [173.228.7.7]

   ----- The following addresses had permanent fatal errors -----
<http://dummy.us.eu.org/noelleg>

   ----- Transcript of session follows -----
550 5.1.2 <http://dummy.us.eu.org/noelleg>... Host unknown (Name server: _dc-mx.148c2238b35d.unumhumbrewing.com.: non-recoverable error)

Content-Type: message/delivery-status

Reporting-MTA: dns; d.mail.sonic.net
Received-From-MTA: DNS; 173-228-7-7.dsl.static.fusionbroadband.com
Arrival-Date: Sat, 29 May 2021 09:32:05 -0700

Final-Recipient: RFC822; http://dummy.us.eu.org/noelleg
Action: failed
Status: 5.1.2
Remote-MTA: DNS; _dc-mx.148c2238b35d.unumhumbrewing.com
Last-Attempt-Date: Sat, 29 May 2021 09:32:06 -0700

-------------------------------------------------------------------------------

 > From: http://www.sontec.sontrak.net/~support
 > Date: Fri, 28 May 2021 11:25:50 -0700
 >
 > Hey,
 > 
 > Hope you are doing well. I have gone ahead and sent a test email to "
 > http://dummy.us.eu.org/noelleg";, in hopes of getting the bounce back message 
 > you were receiving. I have not received the bounce back message yet, but can 
 > you check on your side to see if you received the email. Once you get that 
 > information please feel free to respond to this email or call us at 7075473400, 
 > every Mon-Sun from 8am to 10pm.
 > 
 > Sincerely,
 > Pablo B.
 > 
 > --
 > http://www.sonic.net/~support                         Sonic.
 > Sonic. Support                            2260 Apollo Way
 > 1.855.394.0100 (Tech Support)             Santa Rosa, CA 95407
 > 1.707.547.2199 (FAX)                      http://sonic.com/support