Kuriger, Michael <[EMAIL PROTECTED]> wrote:
> My name is Mike and I am the UNIX admin at WB online. Anyway, I was tasked
> with rolling out a new mailing list server because our ListServe box is too
> slow and easy to hack. I set up qmail on a small 450mhz SUN netra and it
> seems to also be too slow. I need to be able to deliver about 1,000,000
> emails a day and from the speed I get out of my netra I will need a dozen of
> them!
High-volume qmail servers is a topic which comes up regularly on this list; if
you search the qmail mailing list archives, you will find many good technical
suggestions on getting the best performance out of your system. You can find
a link to the archives at qmail.org.
A few things you'll probably want:
-big-concurrency patch, and a concurrencyremote setting of 500 or as high
as you have resources for
-queue on it's own disk or disks (RAID), possibly on its own SCSI
controller
-15kRPM SCSI disk(s)
-logging through multilog, to separate disk
-use something other than Solaris; it's horribly slow in file operations
and its networking code is bloated, buggy, and slow
-if your mailings are unique-per-user (i.e. body changes for every
recipient), you'll need the big-todo patch, and there are various ways of
scheduling the message injection to maximize delivery speed
-if your mailings are all identical message bodies, use ezmlm/ezmlm-idx as
your mailing list manager, or write something custom which uses qmail's
VERP functionality to automate bounce handling
-have bounces handled by a separate machine
There's other tricks as well, but with the above list you should easily be
able to handle 1M deliveries a day on decent hardware. I'm afraid I'm not
familiar with the Netra you mention.
Charles
--
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Charles Cazabon <[EMAIL PROTECTED]>
GPL'ed software available at: http://www.qcc.sk.ca/~charlesc/software/
Any opinions expressed are just that -- my opinions.
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