Wietse,

Thanks.  But now I am confused.  From what I understood you to say, I should be 
sending 1msg/s 
to the next hop, but according to my logs, I am sending ~50msg/s to the relay, 
and I would like to 
get it to under 5msg/s.


On 24 Feb 2015 at 8:55, Wietse Venema wrote:

System Support:
> 
> I send several weekly newsletters where a number of the e-mails
> are all relayed to a separate host.  I would like to rate limit
> the traffic to this host.  I tried using:
> 
> smtp_destination_concurrency_limit = 5

smtp_destination_concurrency_limit has no effect when you turn on
smtp_destination_rate_delay. It specifies a delay BETWEEN deliveries,
meaning the deliveries cannot be in parallel.

> smtp_destination_rate_delay = 1s
> smtp_extra_recipient_limit = 5 

There is no smtp_extra_recipient_limit parameter.

> these evidentially apply to the final destination, not the relay.

The rate limits apply to the next-hop destination. In order
of decreasing precedence, that is:

- the destination in main.cf:transport_maps, 
- the destination in main.cf:sender_dependent_relayhost_maps,
- the destination in main.cf:default_transport,
- the destination in main.cf:sender_dependent_default_transport_maps,
- the destination in main.cf:relay_transport,
- the destination in main.cf:relayhost,
- the recipient's domain.

        Wietse
...don

support (at) microtechniques.com

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