How to prevent mail to non-existent accounts

[Roy Smith]

In article <11680 at cgl.ucsf.EDU> gregc at cgl.ucsf.edu (Greg Couch) writes:
> we share a password file amoung several 4.3 systems and restrict access
> to a particular system by having login fail if the user doesn't have a
> home directory on that system.  Thus we don't want users to get mail on
> machines they can't access.  Enclosed is a small enhancement to reject
> mail to users that don't have home directories.

	Yuck!  This really seems rather needless.  Why not just share
/usr/lib/aliases files as well?  Have each person have an alias pointing to
the machine where their home directory is.  Not only is that much simplier
than hacking sendmail, but it also allows people to send mail to somebody
without having to know which machine they are on.
-- 
Roy Smith, Public Health Research Institute
455 First Avenue, New York, NY 10016
{allegra,philabs,cmcl2,rutgers,hombre}!phri!roy -or- roy at alanine.phri.nyu.edu
"The connector is the network"