M-PMAS -E- [domain] address check for postmaster@domain failed at ALL MX records
THE PROBLEM EXPLANATION:
This means that the specified mail server (s) does not have the postmaster@domain_name email address.
SOLUTION OF THIS PROBLEM:
By properly configuring the mail server, make sure that the email address can receive mail, or remove the MX record from the domain name zone file during the nameserver change.