Please Help,
i receive complain from user that their email is not receive by recipient.Error message as below:
451 4.4.0 Primary target IP address responded with: ""451 <server.domain.com> is invalid or DNS says does not exist.
Please Help,
i receive complain from user that their email is not receive by recipient.Error message as below:
451 4.4.0 Primary target IP address responded with: ""451 <server.domain.com> is invalid or DNS says does not exist.