journaling and retention policies

Hello

I have an exchange 2010 sp2 server with journaling enabled on all databases.

All messages received are sent to the journal database.

Is it possible to exclude this for specific types of messages or specific sender?

This would apply to items like systems status and alerts, or messages from our backup system.

I want to receive the email but do not want it sent to the journal.

The journal has a 1 year retention policy applied to it but there is no reason for messages of the types to be journaled and retained for one year.

Thanks in advance!