The Warning log displays warning messages about errors of little significance. Typical examples of such warnings are messages stating that a user with administrator rights has a blank password, that a user account of a given name does not exist or that a remote POP3 server is unavailable.
Events causing display of warning messages in this log do not greatly affect Kerio MailServer's operation. They can, however, indicate certain (or possible) problems. The Warning log can help if for example a user is complaining that certain services are not working.