Hi Russel, You have to change your default_destination_rate_delay, as said in the documentation :
*The default amount of delay that is inserted between individual message deliveries to the same destination and over the same message delivery transport.* So, in your case, it sends only 1 message every second. Regards, YM Le mer. 23 févr. 2022 à 17:08, Russell Jones <arjone...@gmail.com> a écrit : > Hi all, > > I am struggling to understand why my postfix configuration is not allowing > me to send 10 messages per second through my configured relayhost. When > watching the logs, it is sending 1 message per second. > > initial_destination_concurrency = 10 > default_destination_concurrency_limit = 10 > default_destination_rate_delay = 1s > > smtp inet n - n - - smtpd -o > smtpd_sasl_auth_enable=no -o myhostname=mail.example.com > > > To me, this is saying "send 10 messages every 1 second". To Postfix, this > doesn't seem to be happening. > > Could I have some help with gaining some insight into what I'm missing? > > Thanks! > > -- Yves-Marie LE PORS-CHAUVEL Email Product Manager *T: +33 2 23 45 57 99* (3043) 23, rue du Bignon - 35 135 Chantepie www.ccmbenchmark.com