i am using sendmail + spamassasin + clamav + procmail

my local mail delivery agent is procmail

configration of procmail

Code:
LOGFILE=/var/log/aruspam
VERBROSE=ON

:0fw:$HOME/spamassassin.lock
| /usr/bin/spamc

:0W
* ^X-Spam-Virus: Yes
/var/spool/mail/trash

this is working fine but
from last 2 days some mails are not going through this they are directly get dilivered to user and all of that type of mails are virus/spam mails

i want to know how to avoid this

plz replay, its IMP