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Date: Mon, 27 Sep 2004 07:11:21 +0200
From: Nico Meijer <nico.meijer@zonnet.nl>
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Subject: Re: Backup Mail Server Questions
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Hi Bill,

> Backup SMTP is even more difficult to justify.  The SMTP standard has
> transient failure recovery built into it, so if your net connection is
> down for an hour or so, mail delivery will resume when the connection
> comes back up.

But, with backup MX, *you* are in charge of all mails in the queue. 
Routing messages to a new primary becomes so much more easier.

End users are less likely to get "couldn't deliver yet but will keep 
trying" messages from their own smtp-server. (It appears to me that most 
users, when given such automated notice, start running around in panic 
and making frantic, unnecessary phonecalls. This was different some 
years ago.)

Bye... Nico