Peter,
 
I've already set them to nomail. However, normally I prefer digest
because it reduces my load to one error per day per list (I realize
some lists produce more than one digest, but mine don't) and subscribers
start receiving their mail as soon as their boxes are emptied or their
system starts functioning.  It seems like a good compromise. I've
informed subscribers what sudden digests mean and suggest that they
set themselves back to ordinary mail as soon as they receive an
unexpected and unwelcome digest.  If digests bounce for a week I
delete the subscriber.
 
Ingrid
[log in to unmask]  & ihs&ionet.net
P.S. The Erols.com mess seems to involve yesterday's messages that are
finally being processed and rejected!  Weird . . .