> Most likely it is so that sendmail can determine the load average. It > has a feature that it will start queueing everything (rather than > delivering immediately) at one load threshhold, and another threshhold > at which it will begin refusing connections altogether. On some > systems, there is a system call to get the load average through the > kernel. On those where there is not, it is necessary to read /dev/kmem > to get this information. Sendmail runs as root, though. I would think setgid kmem privileges would be superfluous. ...Robert