[Mailman-Users] Slow Performance on semi-large lists

[D.J. Atkinson]

Cool!  Thanks!  I'll discuss this with my other sysadmins and see if that
will cause any problems with anything they have going on.

On Thu, 14 Dec 2000, Chuq Von Rospach wrote:

>At 10:12 AM -0700 12/14/00, D.J. Atkinson wrote:
>
>>My probem is getting things from Mailman's qrunner into the sendmail queue
>>using the SMTPDirect module because sendmail takes up to 160 seconds per
>>name to reject names being fed to it from qrunner that it can't lookup.
>
>Try setting
>
>	O DeliveryMode=defer
>
>in your sendmail.cf. That causes sendmail to accept the mail without 
>making a DNS lookup on it first. Note that this also implies 
>DeliveryMode=queue, so stuff won't be delivered immediately. That 
>means (if you already aren't) that you need to do queue runs 
>aggressively using -q.
>
>On the other hand, I've found it's usually a good idea on a 
>mail-liser server box to user DeliveryMode=queue, a -q1m and use 
>MaxDaemonChildren to rate-limit sendmail. By tuning using the 
>multiple subdirectories sendmail 8.10 and later support, you can ramp 
>up delivery really quickly and not overload the system with burst 
>loads.
>
>I'm just starting to experiment with defer (I've been meaning to for 
>a while, but things were going okay without it...), and so far, it 
>looks like a nice plus. It definitely speeds up MLM->MTA transfers.
>
>-- 
>Chuq Von Rospach - Plaidworks Consulting (mailto:chuqui at plaidworks.com)
>Apple Mail List Gnome (mailto:chuq at apple.com)
>
>We're visiting the relatives. Cover us.
>
>------------------------------------------------------
>Mailman-Users maillist  -  Mailman-Users at python.org
>http://www.python.org/mailman/listinfo/mailman-users
>

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