Re: remote load management, was orbs.org nonsense

[John R. Levine]

>If, however, you admit that it causes problems for sendmail installations, and
>you admit that a lot of sites use sendmail, then you'll probably agree that
>defining "good netizen" would include "limiting outgoing connections to a
>particular MX" ... to some reasonable number (heck, you can detect what the
>foreign MTA is when you connect usually ... )

I've been thinking for quite a while of some sort of hack to qmail to
do remote load management, the idea being that we want to open almost
but not quite enough connections to each remote system to make the
remote fall over.

Possibilities for guessing the appropriate limit per remote might include:

- sniff the SMTP banner for known lame MTAs

- measure the round trip time, for the response to HELO, stop connecting
when it becomes "too much", either an absolute limit or N times more than
it used to be

- pay more attention to "421 come back later" type messages

-- 
John R. Levine, IECC, POB 727, Trumansburg NY 14886 +1 607 387 6869
[EMAIL PROTECTED], Village Trustee and Sewer Commissioner, http://iecc.com/johnl, 
Member, Provisional board, Coalition Against Unsolicited Commercial E-mail