Operating System & Version
CentOS 7.9
cPanel & WHM Version
v100.0.5

Maning

Active Member
Jun 29, 2017
44
7
8
Bulgaria
cPanel Access Level
Root Administrator
Experiencing problem with a specific domain.

When domain.tld trying to send an email to mydomain.tld getting error:

'450 4.1.2 <[email protected]>: Recipient address rejected: Domain not found'

When mydomain.tld trying to send an email to domain.tld getting error:
SMTP error from remote mail server after RCPT TO:<[email protected]>: 450 4.1.8 <[email protected]>: Sender address rejected: Domain not found

Domain DNS zones seems fine.