On Tue, 24 Jun 2025 at 13:39, Wietse Venema via Postfix-users <postfix-users@postfix.org> wrote: > > It's necessary but not sufficient. As documented, this changes how > dovecot_destination_concurrency_limit works, from concurrency per > domain, to concurrency per recipient (in addition to the obvious > "one recipient per dovecot delivery request). > > Add: dovecot_destination_concurrency_limit = 1.
Thanks, it seems it helped and duplicates are correctly detected and discarded now. > The Postfix scheduler has worked this way for more than 25 years. What confused me is that it apparently worked with my wrong config for several years before the upgrade. Probably something about process scheduling changed in the new kernel/debian. -- bye, Marki _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
