Server crash and logfile

[John Borhek]

What do the following log file entries mean and do I need to fix them?

  pykolab.smtp_access_policy ERROR Operational Error in caching: 
(OperationalError) (1045, "Access denied for user 'user'@'localhost' 
(using password: YES)") None None

Option imap/virtual_domains does not exist in config file 
/etc/kolab/kolab.conf, pulling from defaults

Thanks!