pir@??? said:
} The traditional response to this is to have two A records for
} relay.dom.ain When one machine is down it fails one out of two
} attempts and you don't have a single point of failure :)
} (and its a damn sight easier to set up).
and *seriously* cheaper than a load balancer....
[if you have serious problems with a lot of clients that cannot handle DNS
round robin (which tends to mean that your DNS server is actually
elderly/broken), then you can change the most hit host (normally the
lowest IP number) to an exim config which simply fires off messages to the
other handling boxes - which would be very low on resource usage] However
this is probably indicative of something else being broken - the DNS
server and clients being the first place to look.
There might be a case for a load balancer should you get to the size of
AOL or similar where your MXes don't fit in a reasonable DNS query.
Nigel.
Nigel.
--
[ Nigel.Metheringham@??? - Systems Software Engineer ]
[ Tel : +44 113 207 6112 Fax : +44 113 234 6065 ]
[ Real life is but a pale imitation of a Dilbert strip ]
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