Michael T. Babcock <[EMAIL PROTECTED]> writes on 17 August 2000 at 13:30:37 -0400
> What is the correct way to configure a secondary MX machine (qmail using
> qmqp) so that the messages are sent with the standard exponential backoff
> until '24 hours', and then every day for two weeks?
>
> I've been asked to secondary a machine that is down sometimes for extended
> periods of time (they won't upgrade, but they'll pay us to host secondary
> ...) and they don't want to lose their mail.
One way is to configure that domain as virtual on the secondary, and
direct it all into a maildir. Then run maildirsmtp (or maildirqmtp)
on the maildir under cron or other control to make attempts at
delivery to the primary on whatever schedule you want.
Remember that a small amount of mail will end up at the secondary even
when the primary is actually up, due to connectivity and DNS
flakiness; so you need a system that delivers that mail fairly
promptly. You can't, for example (as I wanted to before I realized
this problem), hold the mail and require a manual trigger to deliver
it.
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David Dyer-Bennet / Welcome to the future! / [EMAIL PROTECTED]
