The only options I can think of are :-
Serialize_hosts (which will limit connections to 1 per host)
Or
You set your system to only queue for certain domains instead of doing
immediate deliveries by using the queue_only control modifier in the ACL's
and then setting you maximum number of queue runners to a reasonable level
(started every minute -q1m to avoid delivery delays)
-Andy-
> -----Original Message-----
> From: Gareth Hastings [mailto:gareth.hastings@twi.co.uk]
> Sent: 12 April 2006 08:40
> To: alexis; exim-users@???
> Subject: RE: [exim] limit SMTP sending connections
>
> > Hello, can you please, if there is, point me in the way or the
> > documentation on how to limit the smtp ammounts, in terms of
> > connections, troughput or any limitation. Fact is one of my
> servers is
> > used to send distribution lists to our customers, the server has a
> > huge bandwidth, so thats not a limitation, but this scenario
> >
> > - I have, as an example, 3000 subscribers in a list with the same
> > domain, the receiving server accepts some messages and then
> it start
> > to do some tarpitting or applies delay so i get a lot of messages
> > delayed for a long time.
>
> I have a similar problem. We forward all our mail to a smart
> host who does AV scanning and spam filtering. Problem is they
> only accept 40 concurrent connections and then refuse
> anymore. If we do any massive mails then we normal hit the 40
> concurrent connections limit which then causes ALL outbound
> mail to get instantly deferred!
>
>
>
