Something

#!/bin/sh
SENDMAIL="/usr/sbin/sendmail"
EGREP=/bin/egrep
TMP=/var/spool/vscan/spamc-tmp
WORKFILE="$TMP/`date -Iseconds`.$$.txt"
rm -f $WORKFILE
cat | /usr/bin/spamc -u vscan > $WORKFILE
RETVAL=$?
if $EGREP -q "X-Spam-Flag: YES" < $WORKFILE; then
  logger -p mail.notice -t spamcheck-wrapper[$$] Spam torolve. Spamc retval: $RETVAL
else
  $SENDMAIL "$@" < $WORKFILE
logger -p mail.notice -t spamcheck-wrapper[$$] Level atengedve. Spamc retval: $RETVAL
fi
exit $?