Rich
>----------
>From: Rich Pieri[SMTP:rich.pieri@prescienttech.com]
>Sent: 31 December 1996 14:34
>To: majordomo-users@GreatCircle.COM
>Subject: Re: Change of circumstances
>
>-----BEGIN PGP SIGNED MESSAGE-----
>
>>>>>> "PB" == Peter Bowyer <pbowyer@verity.com> writes:
>
>PB> and the characteristics of the new MTA are that it handles mail
>more
>PB> effectively if it gets one message with all 2000 list recipients
>PB> specified, rather than lots of mails with a subset of the
>PB> recipients.
>
>On general principle, I find this difficult to believe. At the very
>least the memory requirements skyrocket (need to keep 2000 mailboxes
>times however many instances of the MTA are running concurrently in
>available memory to work on them), which can (and probably will) cause
>increased VM swapping, which will slow down the machine, thus negating
>any benefits of the supposedly better delivery mechanism.
Well, it doesn't really matter whether it's believable or not, it's
true. I can't talk about the details because it's under non-disclosure.
>
>Lemme guess... you have bought into the hype behind qmail, right? :)
>qmail is full of such "improvements" that ignore the environment it
>runs
>in.
Nope. Qmail has been here in the past, but not any more. It did a good
job, better than sendmail on the same hardware.
>
>PB> Now, the sendmail config I'm using on the MD box splits each mail
>up
>PB> into chunks of about 20 recipients, which uses a lot of LAN traffic
>PB> to get long mails to the smarthost, and as described above, is
>PB> sub-optimal for the effeciency of the smarthost.
>
>Stop using bulk_mailer and let sendmail transfer the queue over to the
>smart_host just once. The problem is that there is no way to "split"
>the queue on the smart_host without hacking up the MTA.
I'm not using bulk_mailer - sendmail is chopping the message up all by
itself. I'd like it to transfer it just once but don't know how to
achieve that - maybe my original question didn't make that clear, sorry.
>
>The only way to really win is to move your lists over to the mail hub.
Agreed - this is an interim step to just that happy situation.
Thanks for your observations so far.
>Peter
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