Dec 22 11:30:47 picard postfix/pipe[24543]: 41239BF40EE: to=<axle@****.com>, relay=maildrop, delay=0, status=bounced (permission denied. Command output: maildrop: maildir over quota. )

Quota messages still being sent to users & admin as well after I installed this. I also found the following mod of the user@domain.com filter to be a big hit:

logfile "/home/vmail/.mailfilters/mailfilter-log.txt"
                                                                                                                   
if ( /^Subject: ***SPAM/)
{
log "--junk for USERNAME to /dev/null----------------------------- Spam TOSSED. "
to "/dev/null" # Make this "cc" for copy or "to" to not send it to Inbox.
}
else
{
to "/home/vmail/qlynx.com/user/."
}

Throws mail marked as spam away. For testing the caps are handy, I'd: grep -c USERNAME mailfilter-log.txt and find it tossing 1,000s of spams a week for some users.