Hi
I used to administer a qmail-ldap cluster for a group of companies
with around 20 domains and 3000 e-mail accounts, receiving 150,000
mails/day (most of which were SPAM).
I've written a small article about it and how we scaled the system
from just one server to a cluster of seven. Not very technical (no
config files or lower-level details), more of a case study/success
story, but can give some ideas to someone who's starting in the
fabulous world of MTA administration. :-)
http://www.bisente.com/blog/2008/10/02/cluster-de-correo-escalable-con-software-libre/?lan=english
Hope you find it interesting.
Regards
PS: don't have access to the config files as I don't work at that
company any more, but can elaborate a little bit more any aspect of
it, if memory serves...
--
Vicente Aguilar <[EMAIL PROTECTED]> | http://www.bisente.com
