SOLVED Message could not delivered unknown forwarder?


Jan 19, 2023
cPanel Access Level
Reseller Owner
Hello, i got a very strange issue, a company user is trying to send an email to another company user but he gets an error delivery message from unknown email address. the recipient address is [email protected] but it gets the below message.

I have already checked forwarders but there is none.

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]

(generated from [email protected])

host []

SMTP error from remote mail server after RCPT TO:<[email protected]>:

550-5.2.1 The email account that you tried to reach is disabled. Learn more at

550 5.2.1 m11-20020a5d64ab000000b002bdc1856424si25839157wrp.827 - gsmtp