Maybe this helps as well:
Dec 19 17:21:03 sogod [26901]: SOGoRootPage Login from '127.0.0.1' for user '
[email protected]' might not have worked - password policy: 65535 grace: -1 expire: -1 bound: 0
Dec 19 17:21:03 sogod [26901]: 127.0.0.1 "POST /SOGo/connect HTTP/1.0" 403 34/98 0.004 - - 0