# If using qmail, uncomment the following line
#QMAIL_OPT=--qmail

aliascheck $QMAIL_OPT -- "$RECIPIENT_LOCAL" > /dev/null
case "$?" in
    1)
	   reject user unknown
	   ;;
    0)
	   # Fall through to default checks
	   ;;
    *)
	   # To defer mail when alias file not readable, uncomment the
	   # following line:
	   #defer Temporary error processing alias file
	   ;;
esac