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Re: Email System Model

2009-05-22 20:17:53

John R Levine <johnl(_at_)taugh(_dot_)com> writes:

This leads to the fairly obvious question: if the primary is up 99+%
of the time, what's the point of a secondary?  There was an era when
they were useful to deal with networks that didn't have routes to some
parts of the net, but I'd think that's a pretty small niche now.
Unless your primary is down for a long time, days or longer, any
legitimate mail will just wait and retry and get delivered anyway.

My primary is probably up 99% of the time since it only really goes down
every three years or so.  However, when it goes down, it's usually down
for days and I want control over the mail in the meantime.  I don't know
in advance when it's going to go down, and it may well be while I'm out
of the country or don't have Internet access.

I have control over queue retentions on my secondary and can hang on to
mail until I know I'll be around to address whatever problem is

Russ Allbery (rra(_at_)stanford(_dot_)edu)             

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