Re: james and SMART_HOST (DH)

[bill parducci]

i'll start with a few simple graphics and we can go from there. i'll try to get something out tonight.

Noel J. Bergman wrote:
>

Note about load balancing.  James doesn't have to refuse connections to
cause load balancing to occur.  By setting up a number of MX records with
the same priority, the RFC mandates that they be chosen randomly, thus
assuring load balancing behavior over peers.

right. i was just referring to your example where load balancing was demonstrated with same priority MX records; asymmetric MX entries will 'load balance' (failover) when the lower MX record host refuses connections. not an optimum solution but it will work if a secondary server is off site for example, although only really practical for traffic bursts as all sorts of queuing issues will arise.

b


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