[comp.mail.misc] mail delivery over intermittent Internet link

jnford@handlebar.weeg.uiowa.edu (Jay Ford) (03/13/91)

There is a remote site connected to my site via an intermittent dial-up link
for which I will be forwarding mail.  We're running sendmail on each end, and
are probably not inclined to switch mailers, but....

I'd like to avoid the doomed retries which would occur with every queue run
while the dial-up link is down.  It seems necessary to do some kind of queuing
on my system separate from the normal sendmail queue.  I seem to recall some
discussion a while ago about using multiple queues with sendmail, but I can't
remember the details.  Can someone who remembers the discussion fill me in?

The SMTP "turn" command seems like a perfect way for the remote site to request
their queued mail.  They would bring up the link, connect to my mailer, and
turn the connection around to receive their mail.  Has anyone added support for
the SMTP "turn" command to sendmail?

Any information about this stuff would be appreciated, including completely
different approaches.  I'm fairly open to any solution which will work, but I
don't want to stray too far from the mainstream UNIX-SMTP-Internet model.

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Jay Ford, Weeg Computing Center, University of Iowa, Iowa City, IA 52242
jnford@handlebar.weeg.uiowa.edu, 319-335-5555