Can anyone shed some light on the following error? I have logging enabled as suggested and I am getting a lot of these since.
Should I be worried?
Source Event ID Last Occurrence Total Occurrences
7004 1/8/2010 6:17 PM 6 *
This is an SMTP protocol error log for virtual server ID 1, connection #86. The remote host "188.8.131.52", responded to the SMTP command "xexch50" with "504 Need to authenticate first ". The full command sent was "XEXCH50 2088 2 ". This will probably cause the connection to fail. For more information, click http://www.microsoft.com/contentredirect.asp