Answer
GMS connected to a remote system to send an email message. While the connection was successful, the remote server indicated that it was temoprarily unavailable (with a 4xx SMTP response). So GMS is moving on to the back-up server for this domain.
In this case, session Undefined was was processing a message to be delivered to the server Undefined (IP address Undefined). The local folder name is Undefined. The response from the remote server was
Undefined
There is no problem with GMS, so no action is required by you. However, you may wish to investigate the problem with the remote server.
See Also:
- What is an MX record?
- How do I contact the owner of a remote server?
- What is a FQDN?
- How do alerts work?
- What is SMTP Response Code Theory?
Keywords:failed connection POST 8346