Syslog filling with IMAP logins

Hi,

The syslog of the server on which Kolab3 is installed is filled with 
many IMAP login lines many times per second. I have no users on this 
server, it's just a test server. I wonder, what's going wrong... Any 
ideas??

Cheers,
Tobias

Jan 26 18:01:13 james imaps[3748]: starttls: TLSv1.2 with cipher 
DHE-RSA-AES256-GCM-SHA384 (256/256 bits new) no authentication
Jan 26 18:01:13 james imaps[3748]: ptload(): fetched cache record 
(cyrus-admin)(mark 1359212074, current 1359219673, limit 1359208873)
Jan 26 18:01:13 james imaps[3748]: ptload returning data
Jan 26 18:01:13 james imaps[3748]: canonified cyrus-admin -> 
cyrus-admin
Jan 26 18:01:13 james imaps[3506]: login: localhost [::1] cyrus-admin 
plaintext+TLS User logged in SESSIONID=<james-3506-1359219673-1>
Jan 26 18:01:13 james imaps[3748]: login: localhost [::1] cyrus-admin 
plaintext+TLS User logged in SESSIONID=<james-3748-1359219673-1>
Jan 26 18:01:14 james imaps[3508]: accepted connection
Jan 26 18:01:14 james imaps[3508]: SSL_accept() incomplete -> wait
Jan 26 18:01:14 james imaps[3508]: SSL_accept() succeeded -> done
Jan 26 18:01:14 james imaps[3508]: starttls: TLSv1.2 with cipher 
DHE-RSA-AES256-GCM-SHA384 (256/256 bits new) no authentication
Jan 26 18:01:14 james imaps[3494]: accepted connection
Jan 26 18:01:14 james imaps[3508]: ptload(): fetched cache record 
(cyrus-admin)(mark 1359212074, current 1359219674, limit 1359208874)
Jan 26 18:01:14 james imaps[3508]: ptload returning data
Jan 26 18:01:14 james imaps[3508]: canonified cyrus-admin -> 
cyrus-admin
Jan 26 18:01:14 james imaps[3494]: SSL_accept() incomplete -> wait
Jan 26 18:01:14 james imaps[3494]: SSL_accept() succeeded -> done
Jan 26 18:01:14 james imaps[3508]: login: localhost [::1] cyrus-admin 
plaintext+TLS User logged in SESSIONID=<james-3508-1359219674-1>
Jan 26 18:01:14 james imaps[3494]: starttls: TLSv1.2 with cipher 
DHE-RSA-AES256-GCM-SHA384 (256/256 bits new) no authentication
Jan 26 18:01:14 james imaps[3494]: ptload(): fetched cache record 
(cyrus-admin)(mark 1359212074, current 1359219674, limit 1359208874)
Jan 26 18:01:14 james imaps[3494]: ptload returning data
Jan 26 18:01:14 james imaps[3494]: canonified cyrus-admin -> 
cyrus-admin
Jan 26 18:01:14 james imaps[3625]: accepted connection
Jan 26 18:01:14 james imaps[3625]: SSL_accept() incomplete -> wait
Jan 26 18:01:14 james imaps[3625]: SSL_accept() succeeded -> done
Jan 26 18:01:14 james imaps[3625]: starttls: TLSv1.2 with cipher 
DHE-RSA-AES256-GCM-SHA384 (256/256 bits new) no authentication
Jan 26 18:01:14 james imaps[3625]: ptload(): fetched cache record 
(cyrus-admin)(mark 1359212074, current 1359219674, limit 1359208874)
Jan 26 18:01:14 james imaps[3625]: ptload returning data
Jan 26 18:01:14 james imaps[3625]: canonified cyrus-admin -> 
cyrus-admin
Jan 26 18:01:14 james imaps[3494]: login: localhost [::1] cyrus-admin 
plaintext+TLS User logged in SESSIONID=<james-3494-1359219674-1>
Jan 26 18:01:14 james imaps[3625]: login: localhost [::1] cyrus-admin 
plaintext+TLS User logged in SESSIONID=<james-3625-1359219674-1>