Problem sending email to a subdomain

[borox]

Hi,

I have several subdomain ( test. demo. dev.), when I send an email to an address on the subdomains test or demo, no problem, when I try with dev, I received an error:
Sorry, we were unable to deliver your message to the following address.

<[email protected]>:
550: 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.

I compared the DNS entries between test, demo and dev, I can't see a difference.

Have you an idea on what I can check?

Thanks

Nicolas

 

[cPanelLauren]

Is the domain present in /etc/localdomains (if it's a locally hosted domain) or /etc/remotedomains (if it's remote)