Problem with recive email on default account

[mimiseksimi]

Hello, there is a problem, there is a mimi account, when you create an account it creates a mail account that gets the same name as the name of the account, sending emails from it goes, but receiving emails is already an error, but on other mailboxes that are on the same domain, everything works:
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:

mimi@domain.com
(generated from [email protected])
LMTP error after RCPT TO:<[email protected]>:
550 5.1.1 <[email protected]> User doesn't exist:
[email protected]



---------- Forwarded message ----------
From: "Cat" <[email protected]>
To: [email protected]
Cc:
Bcc:
Date: Sat, 9 Sep 2023 13:09:48 +0200
Subject:
Test:

Screenshot from WHM:

 

[quietFinn]

The "default address" in cPanel account is not a real email address, so you can't send emails to it.

 

[cPRex]

More details on how you can use the default address can be found here - Default Address | cPanel & WHM Documentation