Yves-Marie Le Pors Chauvel:
> Is there a way to implement a delay between connection closing and
> reopening for a specific transport in Postfix, while still using connection
> reuse ?
No, you can't. When email volume drops, the Postfix SMTP client
will not try to reuse a connection even if there is one in the
connection cache, so there may be more connections than SMTP clients.
main.cf:
transport_destination_rate_delay = 5
transport_destination_concurrency_failed_cohort_limit = 10
This will run one SMTP client process at a time, and there may be
two connections open at the same time, one in the SMTP client and
one in the connection cache.
Wietse
