John R Levine <[email protected]> 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 happening. -- Russ Allbery ([email protected]) <http://www.eyrie.org/~eagle/>
