OT: Load Balancing & redundancy using Multiple A records

Richard Frovarp Richard.Frovarp at sendit.nodak.edu
Fri Nov 23 16:27:16 GMT 2007

shuttlebox wrote:
> On Nov 23, 2007 5:08 PM, Joost Waversveld <joost at waversveld.nl> wrote:
>>  Ya, maybe, but the DNS does not look at the load of the machines.
>>  If you're mailservers are all exactly the same with hardware, etc. then it
>> will be a good solution. Otherwise you will get problems.
> Not really, if one implements throttling in the MTA a denied
> connection means the next MX will be tried so if one server gets
> exhausted quickly the more powerful one will get more traffic by using
> the fault tolerance part of the protocol. Pretty cool to get both load
> balancing and fault tolerance without either effort or cost.
Yeah, but will the sending SMTPs fail through the multiple A records for 
a single MX?

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