The mail server could not deliver mail to [email protected] The account or domain may not exist, they may be blacklisted, or missing the proper dns entries. – Knowledgebase


All of sudden emails are getting bounced with below bounce back messages on the cPanel server as below –

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]

The mail server could not deliver mail to [email protected] The account or domain may not exist, they may be blacklisted, or missing the proper dns entries.
Solution :-

 

Inappropriate/wrong resolver (/etc/resolv.conf) configured has caused this issue, when I changed it emails started working.

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