A user has attempted to logon to GMS using the POP3 protocol but failed. The account does not exist.
In this case, session Undefined was processing a connection from a client at Undefined. The user claimed to be Undefined@Undefined and could not log on because their account did not exist.
To resolve this problem you will need to check that the user has entered their details correctly. Check the details of the error code for more information.
Keywords:failed logon POP3 unknown user 8143