Answer
A POP3 client has connected to GMS and has issued an unrecognised command. This may be due to someone trying to find a vunerability on your system, someone trying to tie up your system resources and make your server unusable or a very badly written mail client.
In this case, session Undefined is processing a connection from Undefined. The command just issued by the remote client is
Undefined
and GMS responded with
-ERR Unknown command
No action is required by you because GMS has managed the problem. You may wish to contact the person running the system at Undefined and find out why this has happened.
See Also:
Keywords:too many bad commands 8137