2 other alternatives :-
Hardware loadbalancer (such as Alteon or F5)
Linux as a loadbalancer - there are various iptables options that can be
used to loadbalance connections, though I'm not sure how well these work if
one of your email servers goes down.
At least with the Alteon load balancers, they can do helath checks and look
for smtp banners to decide if the server is available.
-Andy-
-----Original Message-----
From: Jeroen van Aart [
mailto:kroshka@atypon.com]
Sent: 13 November 2007 01:52
To: exim-users@???
Subject: Re: [exim] Load Balancing (2) Exim servers
JDavila@??? wrote:
> How can I load balance (2) Exim servers for Inbound and OutBound
> Deliveries. Any info will be much appreciated.
Except for roundrobin DNS this is not that easy to setup. But if you're
willing to use a 3rd party spamfilter like Postini you get the ability to do
load balancing of 2 or more smtp servers. Either with or without failover
smtp (which can also be multiple independently load balanced servers, what's
in a name ;-). It's quite easy to setup and rather flexible. I'm using it
here to have a failover smtp server to the main server. And unlike the usual
failover in mx records, where spammers specifically target the lowest
priority mx record (often being a fail over, or backup), this will not be
abused by spammers (yet?).
Regards,
Jeroen
