different log files depending on message type

Hi,

Is it possible to have multiple log files, where you can configure by message type (php, node, user, cron, access denied, page not found, etc) which log file the message is logged to? I have a use case where I need to separate out user and node log messages from the rest so as to create a separate 'audit trail' log file. For each message type not configured, then I imagine there would be a catch all file (or to syslog) where those message types would go.

Cheers,
Stella