Rodrigo Severo - F?brica:
> On Sun, Aug 26, 2018 at 10:27 AM, Wietse Venema <wie...@porcupine.org> wrote:
> > Rodrigo Severo - F?brica:
> >> On Sun, Aug 26, 2018 at 9:29 AM, Wietse Venema <wie...@porcupine.org> 
> >> wrote:
> >> > Rodrigo Severo - F?brica:
> >> >> On Sat, Aug 25, 2018 at 7:08 PM, Wietse Venema <wie...@porcupine.org> 
> >> >> wrote:
> >> >> > Rodrigo Severo - F?brica:
> >> >> >> Hi,
> >> >> >>
> >> >> >>
> >> >> >> Is I set:
> >> >> >>
> >> >> >> smtp_destination_concurrency_limit = 2
> >> >> >> smtp_destination_rate_delay = 1s
> >> >> >>
> >> >> >> and send several messages to the same domain will each connection 
> >> >> >> send
> >> >> >> one message and wait 1 second (so I would have 2 messages delivered
> >> >> >> per second, one from each connection) or both connections to the same
> >> >> >> destination domain coordinate themselves and I would have only one
> >> >> >> message delivered per second to the destination domain?
> >> >> >
> >> >> > Instead of guessing, please read the documentation.
> >> >> > www.postfix.org/postconf.5.html#transport_destination_rate_delay
> >> >>
> >> >> I have read the documentation several times. The documentation states
> >> >> that "With a corresponding per-destination recipient limit > 1, the
> >> >> rate delay specifies the time between deliveries to the same domain."
> >> >
> >> > Delivery 1 starts, delivery 1 ends, N seconds delay, delivery 2
> >> > starts, delivery 2 ends, N seconds delay, delivery 3 starts, delivery
> >> > 3 ends, and so on.
> >>
> >> My doubt is, having 2 simultaneous connections making deliveries to
> >> the same domain, this process you described happens in each
> >> simultaneous connection (doubling the delivery rate) or all
> >> simultaneous connections delivering to the same domain coordinate so,
> >> no matter how many simultaneous connections I have to the same domain,
> >> only one delivery will occur each N seconds?
> >
> > You are asking about the monster behind the trees. There is no such
> > monster. Postfix delivers mail exactly as described:
> >
> > Delivery 1 starts, delivery 1 ends. N seconds delay. Delivery 2
> > starts, delivery 2 ends. N seconds delay. Delivery 3 starts, delivery
> > 3 ends, and so on.
> 
> I believe you mean that each simultaneous connection to the same
> destination will follow the procedure you described. Thanks for your
> clarification.

Absolutely not. I promise that each delivery to that destination
(recipient or domain) will be followed by the per-destination
transport_destination_rate_delay.

> I think that this info - the delay between deliveries is per
> connection and not per, or only, per domain -  should be stated
> clearly in the documentation.

Absolutely not. I promise that each delivery to that destination 
(recipient or domain) will be followed by the per-destination
transport_destination_rate_delay.

        Wietse

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