> >   > > So it looks like Listserv is repeating the attempt to
> >   > >deliver a digest on a regular interval,
> >   >
> >   > LISTSERV(tm) doesn't do this, it is Sendmail that is doing so.  This is
> >   > normal behavior when a transient delivery error occurs (mailbox full is a
> >   > transient error, because it might be cleared up shortly)
> >
> >   Yes, sendmail retries.  But it's not normal to receive an error message
> >   for each unsuccessful attempt.  It's hard to tell more about what's
> >   happening without seeing the messages.
> >
> Sendmail 8.?.?  changed all that. I haven't bothered to read the manual
> yet because I'm fast with the delete key, and the number is not huge
> so I don't now which params are involved.
>
> Since we upgraded, the number of "failed after 4 hours re-trying" messages
> or "3 days retrying" have increased from zero to more than zero.
>
> It's probably related to
> confTO_QUEUEWARN        Timeout.queuewarn
>                                         [4h] The timeout before a warning
>                                         message is sent to the sender telling
>                                         them that the message has been deferred.
>
> But I haven't digested all of the new config stuff, let alone all of the
> changes, between 5.65 and 8.
>
> T.T.F.N.
> William H. Magill                          Senior Systems Administrator
> Information Services and Computing (ISC)   University of Pennsylvania
> Internet: [log in to unmask]             [log in to unmask]
>           [log in to unmask]                 http://pobox.upenn.edu/~magill/
 
Sendmail 8.7.x does give you those "not deliverable after 4 hours" messages
by default.  You can turn them off, however, in your own sendmail.  This
is not the same as giving an error message for each failed delivery attempt.
Delivery is normally retried much more often than every 4 hours.