Hi All,
Found that three failed SMTP relay attempts at login authentication failed and showed up on the WebAdmin logins (see pic)...
Extract from user authentication log:
2010:06:04-17:48:49 mercury-1 aua[2395]: id="3005" severity="warn" sys="System" sub="auth" name="Authentication failed" srcip="0.0.0.0" user="test" caller="smtp" reason="DENIED"