[Mailman-Users] another stupid question about mailman's mail handling

[J C Lawrence]

On Sun, 21 Apr 2002 18:56:59 +0000 
Jonathan Vanasco <jvanasco at hotmail.com> wrote:

> perl's mail::bulkmail will optimize smtp delivery by sending out
> chunks of emails within one domain at once, using multiple addresses
> w/one file in the same envelope...

> i was wondering if something like this was implemented, but i dont
> think so... so i'm wondering why its not.

Mailman sorts the target domains and then batches the list per the
SMTP_MAX_RCPTS as previously noted.  Due to this target domains will be
clustered.  Depending on whether the number of addresses within a
specific target domain is modulo SMTP_MAX_RCPTS, there may or may not be
other domains within a specific bundle (2.1 does a good job here, 2.1
does slightly better).

Note: This is actually a comparitively smaller optimization given an
intelligent and performant MTA ala Postfix or Exim.  It much more
significant for Sendmail.

-- 
J C Lawrence                
---------(*)                Satan, oscillate my metallic sonatas. 
claw at kanga.nu               He lived as a devil, eh?		  
http://www.kanga.nu/~claw/  Evil is a name of a foeman, as I live.