On Thu, Jan 17, 2013 at 1:03 PM, Wietse Venema <wie...@porcupine.org> wrote:

> Steve Jenkins:
> > yahoo_destination_concurrency_limit = 4
> > yahoo_destination_recipient_limit = 2
> > yahoo_destination_rate_delay = 1s
>
> As documented, rate_delay enforces a delay BETWEEN deliveries to
> the same destination, and therefore, the concurrency to that
> destination is always 1.  I see no way to enforce delays BETWEEN
> simultaneous deliveries to the same destination.
>

Thanks for clearing that up. So I can tinker with destination concurrency
OR rate delay, but not both.

So now I suppose my follow-up question is what's more likely to keep the
big MTAs happier? Delays between individual deliveries or limited
concurrency?


> The documentation also has a warning concerning per-destination
> recipient limit (the concept of destination depends on the recipient
> limit). Different destinations are delivered in parallel.
>

I read that warning, but wasn't sure I understood it properly. I know that
setting destination recipient limit to anything above one defines a
"destination" as a domain, so by setting it to 2 we're saying "wait 1s
between every delivery to a Yahoo domain," right? And if every message sent
is unique, would that mean there'd be no difference between a setting of 2
and the default of 50 in this case?

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