There is a bug in the vacation program - it won't include the .vacation.msg
file and simply sends out an email without any body.  The pipe to include
the message is being closed before anything is being written to it.  I
believe this vacation is from Powertools 6.2 but I'm using it with RH 6.1
with the latest patches.

The fix I have found is trivial:

--- vacation.c.orig	Fri Jul  7 14:58:08 2000
+++ vacation.c	Fri Jul  7 14:42:16 2000
@@ - 505,7 +505,7 @@
		syslog(LOG_ERR, "vacation: pipe: %s", strerror(errno));
		exit(1);
	}
-	i = vfork();
+	i = fork();
	if (i < 0) {
		syslog(LOG_ERR, "vacation: fork: %s", strerror(errno));
		exit(1);