R option to sendmail and artifacts

[Ron Stanonik]

I've been wondering what happens when the server is down or even just
busy.  Since the machines with R option are presumably not running a
daemon, queueing makes no sense; ie, no daemon to later run the queue.
Does sendmail with the R option notify the user of the problem, quietly
lose the mail, ...?  Could some of the artifacts be left over because the
server was unavailable? 

Thanks,

Ron Stanonik
stanonik at nprdc.arpa
ucsd!nprdc!stanonik