Re: split the load?

>It doesn't matter if you get the results back randomly or not. If you
>pick randomly from them, you are guaranteed to still have a random
>distribution. If you pick randomly from a non-random set, you have a
>random distribution. Therefore, it is irrelevant the order that DNS
>gives you the MX records in. Picking one of these at random is the
>right thing to do. If someone wants you to give precidence to one of
>these hosts, then by definition, that someone must change the MX
>precidence to be a lower value.

Don't DNS implementations have the option of ordering MX and A record
returns based on a sorting criteria such as network preference?  I
recall that Bind 4.8 had such a feature, and I presume that 4.9 still
has the feature.  Randomizing in the MTA would defeat that, and it is
probably difficult for the MTA to know whether such an ordering was
used or not.
-- 
    Ronald S. Karr
    tron |-<=>-|    tron@???