(sorry for long delay...) Byung-Hee HWANG via Postfix-users <[email protected]> writes:
> Wietse Venema via Postfix-users <[email protected]> writes: > >> testeur via Postfix-users: >>> Hi, >>> >>> I did a request to mailman3 ML about this question, but it seems that >>> postfix can respond to my request. >>> I use mailman3. But AOL, YAHOO seems to consider emails sent to >>> recipients as spam or an "Excessively high volume of emails". There's >>> just 40 (aol, yahoo) emails suscribed to the list. i tested the list on >>> www.mail-tester.com, but 10/10. >>> >>> Is there a mean to configure postfix for that emails be sent to >>> recipients in a spread out manner to avoid being considered spam ? Maybe >>> taking 10 emails from the same domain, to send it all 3 minutes until >>> that all email form the same domain be passed. >> >> See https://www/postfix.org/QSHAPE_README.html >> >> When a destination is unable to handle the load even after the Postfix >> process >> limit is reduced to 1, a desperate measure is to insert brief delays between >> delivery attempts. >> >> * Postfix version 2.5 and later: >> >> o In master.cf set up a dedicated clone of the "smtp" transport for the >> problem destination. In the example below we call it "slow". >> >> o In main.cf configure a short delay between deliveries to the same >> destination. >> >> /etc/postfix/main.cf: >> transport_maps = hash:/etc/postfix/transport >> slow_destination_rate_delay = 1 >> slow_destination_concurrency_failed_cohort_limit = 100 >> >> /etc/postfix/transport: >> example.com slow: >> >> /etc/postfix/master.cf: >> # service type private unpriv chroot wakeup maxproc command >> slow unix - - n - - smtp >> >> Here, the delay is 1 second between deliveries. Use "postfix >> reload" command sparingly, as it resets the rate delay timer. >> Use the command only when you change master.cf, or the rate delay. >> > > Oh exciting! Also i need this policy. Thanks! This is my small but valuable script [3]. Day by day, 99.8% of emails automatically forwarded to Google are successfully delivered. Only a very small number of emails experience temporary bounces. That's why i created it [3]. Thanks to Wietse for the ideas. [3] <https://gitlab.com/soyeomul/Gnus/-/raw/810706d464c5b4c8752d5b032cc040e899f27bad/TSG/karma/karma.sh> Sincerely, Byunghee
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