On Tue, Sep 11, 2012 at 03:45:03PM -0500, Chad M Stewart wrote:
> Long ago I saw a request from a customer that wanted to be able
> to send out 1M in an hour I believe it was.
$ echo 10 6 ^ 3600 / p | dc
277
This is 277 messages per second, and does not require any extreme
measures to speed the disk, just use a battery RAID controller.
> o - turn off file system access/modification time updates
Not needed, but could help.
> o - put the queue in RAM FS
Definitely a bad idea.
> o - if first delivery attempt failed, then send messages to a
> fall back host, let it deal with queues, retries etc
Not a bad idea, especially if the fallback queue is a second Postfix
instance on the *same* machine, see recent thread.
> o - local DNS resolver
Yes, of course.
> o - turn off all checks against the submitter
Yes, no point in wasting time if the answer is known to be "yes".
The real bottleneck will be uncooperative receiving systems, not
local resources.
--
Viktor.
