Len Conrad: > > freebsd 9.0 > postfix 2.10 > > we have: > > master.cf > > orange unix - - n - 1 smtp > > and transport.map > > orange.fr orange: > wanadoo.fr orange: > > main.cf > > postconf | egrep destination | egrep -iv '\$' > > default_destination_concurrency_failed_cohort_limit = 1 > default_destination_concurrency_limit = 1 > default_destination_concurrency_negative_feedback = 1 > default_destination_concurrency_positive_feedback = 1 > default_destination_rate_delay = 60s > default_destination_recipient_limit = 1
As documented: default_destination_rate_delay (default: 0s) The default amount of delay that is inserted between individual deliv- eries to the same destination; the resulting behavior depends on the value of the corresponding per-destination recipient limit. o With a corresponding per-destination recipient limit > 1, the rate delay specifies the time between deliveries to the same domain. Different domains are delivered in parallel, subject to the process limits specified in master.cf. o With a corresponding per-destination recipient limit equal to 1, the rate delay specifies the time between deliveries to the same recipient. Different recipients are delivered in parallel, sub- ject to the process limits specified in master.cf.