R sendmail option?

[Ron Stanonik]

The sendmail distributed with sunos 4.0.1 has an option, R, I've never
seen before.  The sendmail tutorial says,

Rserver		Remote mode.  Deliver through remote SMTP server.
		Default is location of /var/spool/mail.

I recall stumbling across one other reference to this (but can't find it
now), something about clients no needing to run the sendmail daemon.

Any ideas what this option does?  Causes /usr/spool/mail to be nfs mounted
from server?

Thanks,

Ron
stanonik at nprdc.navy.mil