From: "Geo" 

"Richard B."  wrote in message
news:dkjrl2h4f3d4ool8ls9ik53qmlai4m6hme{at}4ax.com...

> >If it doesn't make the hard drives any faster then it's not going to make
a
> >mail server faster.
>
> When the data is held in memory?

What data is being held in memory? If you use POP you pull 1 email at a
time from disk, if you use IMAP you pull a directory listing from disk. If
you use SMTP you save to a queue on disk before post sends the mail across
the network.

On a mail server, memory is mostly sucked up by communications buffers
since things like massively multithreaded pop/smtp/imap communicate with
multiple machines simultaneously and of course spam filters which tend to
get chatty for stuff like reverse dns lookups, multiple blacklists, spf,
etc.

Geo.

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