two servers for one domain

[mwhuen]

Dear All,

I wonder if I can setup two exim email servers (DA) to serve
one domain.

Those two email servers are located in two different places, eg
one in US, and one in Japan.
Users in US will receive email from US server, and Users in Japan will receive email from Japan server, then the speed can be as fast as local bandwidth.


Is it possible?

Thank you.

mwhuen

 

[nobaloney]

You can set up as many mail servers as you want, but DA won't help you. And email will go to the server with the lowest cost (number in the mx record), not to the closest one or the fastest one to answer.

You can figure out how to run DNS on two servers, each one one of the mail servers, so that the DNS server that answers most quickly will give out it's own IP#. How to do it is beyond the scope of a reply here, but I've discussed it previously on these forums in posts on realtime server redundancy.

Of course you'll have to figure out how to make sure each server only accepts email for real addresses; and figure out where to put the mail for pickup once you've received it.

Jeff