How can I distribute email deliveries between 2 or more servers?

Posted by NewtonX on Stack Overflow See other posts from Stack Overflow or by NewtonX
Published on 2010-03-26T14:41:39Z Indexed on 2010/05/19 17:20 UTC
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We provide Email Marketing service through our online Application. We have about 30 customers. And each one has it's own mailling list (5k to 100k emails each).

What we really want is to distribute email's delivery between 2 or more servers. I was wondering What kind of aproach/solutions MailChimp , Constant Contact uses to provide a great service ? use many servers ? many IPs ?

Our spam policy suspends ANY user/customer that gets 10% bounced .

We currently rotate our outgoing Mail Ip once deliveries limit per remote host is reached.

Is it the best approach/solution ?

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