On Fri, 19 May 2017 15:52:05 +0200 marco <marco.brign...@marcobaldo.ch> wrote:
> > So if I understand the docs correctly, setting this parameter to > > e.g.default_destination_concurrency_limit = 1 25 has the following > > result: > > > > 1 message sent to 100 rcpt's -> postfix -> 4 messages to 25 rcpt's > > > > Note: 100 rcpt's at the same domain of course. > > > > Right or wrong? > > Correct, however 25 was a good number only if > default_destination_concurrency_limit is set to 1, as i.e. if you > have 2 you can have 2*25 recipients delivered in parallel and some > servers have been not happy with this. Ah, that might be the issue then, when I leave these parameters set to their defaults, it would mean that the maximum Postfix will send at once is 20 mails containing 50 recipients? So, according to you I should add: smtp_destination_concurrency_limit = 1 to main.cf. R. -- richard lucassen http://contact.xaq.nl/