smtp, randomize recipient domains

[Per olof Ljungmark]

Hi,

We host a few mailing lists and I noted that when the messages are cued,
it is done so in recipient-domain alphabetical order.

We already implemented restrictions on concurrency and number of
recipients per message not to trigger various filters at the receiving
end, and now I thought that maybe it would work even better if the
recieving domains were randomized instead of cued alphabetically.

Any thoughts from the list? Would it be easy to implement?

Thanks!