Lorenzo Milesi:
> > smtp_destination_rate_delay = 1
>
> I tried this, removed the limit on the number of processes, restarted postfix
> and flushed the queue but I still got a lot of connections throttled
> (blocked) by ISP?s firewall.
> Shouldn?t I also add
> smtp_destination_concurrency_limit = 5
You say that the ISP allow FIVE connection/second
With "smtp_destination_rate_delay = 1", Postfix makes no more than
ONE conection per second.
If the ISP keeps blocking, then either the ISP lies about their
policy, or you misunderstood their policy.
You can easily verify in Postfix logs that smtp_destination_rate_delay
works.
Wietse
