No need to put a Subject: line. We use "mail -s" in the crontab anyway.

src/etc/monthly

@@ -1,8 +1,5 @@
 #!/bin/sh -
-#	$OpenBSD: monthly,v 1.4 1997/09/15 09:54:40 deraadt Exp $
-
-host=`hostname -s`
-echo "Subject: $host monthly run output"
+#	$OpenBSD: monthly,v 1.5 1998/02/02 23:08:57 millert Exp $
 
 if [ -f /etc/monthly.local ];then
 	echo ""

src/etc/weekly

@@ -1,14 +1,11 @@
 #!/bin/sh -
 #
-#	$OpenBSD: weekly,v 1.7 1997/09/15 09:54:40 deraadt Exp $
+#	$OpenBSD: weekly,v 1.8 1998/02/02 23:08:56 millert Exp $
 #
 
 PATH=/bin:/sbin:/usr/sbin:/usr/bin:/usr/libexec
 export PATH
 
-host=`hostname -s`
-echo "Subject: $host weekly run output"
-
 if [ -f /etc/weekly.local ];then
 	echo ""
 	echo "Running weekly.local:"