5.4.4 X-SMTP-Server; Host or domain name not found

[rbuxbaum]

My email has worked just fine on my hosting plan, but now I cannot receive emails or send successfully from the mailbox.  I get the following error message:

5.4.4 X-SMTP-Server; Host or domain name not found. Name service error for name=mail.rbcuts.com type=A: Host not found>'.

Did something happen to the MX records without me doing anything to it?  I'm confused!

Thanks in advance.

[Lisi · Accepted solution]

Hi @rbuxbaum,

Thanks for posting. It sounds like your domain name's DNS may not be configured. If you recently change your nameservers or set up a different hosting plan it would cause changes in your DNS. I'd recommend reviewing and updating your DNS. Hope that helps!