[cobalt-users] email services stopped. Cannot receive mail in any domain

["Multivex" <multivex@xxxxxxxxxxx>]

Suddenly email services stopped. I have tthis enabled in services window

 

If I send email to any domain in the server, I get an error

 

Error 504 MX record points to < sender of the email>

local configuration error

 

What can be wrong?

 

Regards

 

Johnny