/etc/courier/maildroprc for ClamAV and Spamassassin

gistfile1.txt

xfilter "/usr/bin/clamassassin"
if (/^X-Virus-Status: Yes/:h)
{
        # Create a Quarantine folder if they've not got one
        `[ -d $DEFAULT/.Quarantine ] || (maildirmake -f Quarantine $DEFAULT)`
        # Deliver to Quarantine folder
        to $DEFAULT/.Quarantine/
}

xfilter "/usr/bin/spamc -f -u $USER -s 5000000"
if (/^X-Spam-Flag: YES/:h || /^X-Spam-Status: Yes/:h)
{
        # Create a Spam folder if they've not got one
        `[ -d $DEFAULT/.Junk ] || (maildirmake -f Junk $DEFAULT)`
        # Deliver to Spam folder
        to $DEFAULT/.Junk/
}