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From: Wietse Venema (wietseporcupine.org)
Date: Thu Nov 13 2008 - 19:33:22 CST
> Victor Duchovni wrote:
> > If your prorblem is output-rate or destination concurrency, you are using
> > the wrong tool.
> As subject, yeap, I actually want to setup such kind of transport to avoid
> getting greylist from yahoo.
> As I know, Postfix 2.5 has destination_rate_delay, it can slow down the
> output-rate, right?
> But in Postfix 2.3, no such parameter provides, so how can it be setup?
If it could be done, I would not have added it to 2.5.
> So I consider to setup a dedicated transport name: slow for yahoo
> Then add the following two parameters for this transport
> slow_destination_recipient_limit = 4
> slow_desintation_concurrency_limit = 4
> I would like to ask, does it enforce the following?
> 1. Postfix will split the messages by nrcpt (number of recipient) by 4
> 2. Only 4 concurrent connection will be made to yahoo at a time
> 3. My server will have 4 concurrent connection made to yahoo with maximun 4
> nrcpt per message at a time (perhaps a second).
This will not control the number of deliveries per time unit.