Default mail delivery rules adjusted for spam

Spam will now be unconditionally delivered to the Spam folder of your mailbox. This change has been implemented after carefully analyzing average delivery scores for spam since the last change implemented that deleted spam above a 10. False positives are very rare and the immediate benefits for those who are inundated by a bevy of spam every day far outweigh the possible downsides.

All rules, which have not been modified from their original state, we amended:

# Global maildrop rules go here
# See http://www.courier-mta.org/maildrop/maildropfilter.html for syntax

if ($SIZE < 131072)
{
        exception {
                xfilter "/usr/bin/spamc -u $RECIPIENT"
        }
}

DELETE_THRESHOLD=10.0
if (/^X-Spam-Flag: YES/)
{
        /X-Spam-Score: (\d+)/
        if ($MATCH1 >= $DELETE_THRESHOLD)
        {
                to /dev/null
        } 
        else 
        {
               to Mail/.Spam/
        }
}