On 25 Feb 2015 at 19:56, Viktor Dukhovni wrote:
> On Wed, Feb 25, 2015 at 02:46:29PM -0500, System Support wrote:
>
> > > No, there should be no such delay because this is a single delivery
> > > of a single message with two recipients.
> > >
> > > Note the identical smtp[7114] pids, with identical queue-id, delays
> > > down to .01s and the same remote server queue id.
> > >
> > > You're not reading your logs correctly. Note also that your previous
> > > 50/s is likely due to the default recipient limit, and we've just
> > > been chasing ghosts.
> >
> > OK. Is there any way to rate limit the traffic to the relay for this use
> > case?
> > I tried reducing the default_destination_recipient_limit to 1 along with
> > the relay and smtp versions.
>
> You seem to not be paying attention. The deliveries *are* rate-
> limited. You're reporting a *single* delivery. Naturally it is
> not possible to rate limit just one delivery, rate limits apply
> to multiple things that happen one after the other...
Yes, I understand that this is not the correct way to limit the traffic to the
relay host, but my
question is how can I do that - rate limit traffic to a relay host that is
generated by a Postfix
address list. Having to write an application/script to send the same message a
1,000 times, once
to each user, instead of using an address list, seems silly.
The reason for working on this is because the relay host is complaining about
excessive traffic
(>5msg/s) and freezing the connection after the first 50 deliveries, so
apparently they do not
consider it a single message:
<snip after 50 successful deliveries>
Feb 23 22:00:01 <myhost> postfix/smtp[3205]: 96CF9139167: host
email-smtp.<relayhost> said: 454 Throttling failure: Maximum sending rate
exceeded. (in reply to end of DATA command)
Feb 23 22:00:04 <myhost> postfix/smtp[3205]: 96CF9139167: to=<use...@aol.com>,
relay=email-smtp.<relayhost>, delay=12, delays=0.47/6/4.5/1.4, dsn=4.0.0,
status=deferred (host email-smtp.<relayhost> said: 454 Throttling failure:
Maximum sending rate exceeded. (in reply to end of DATA command))
<snip a 1,000 or so similar errors follow>
And, I have spent quite a bit of time with the FM and other forums with Postfix
configuration
suggestions.
Having the error occur after the first 50 e-mails,
and reading this:
> No, there should be no such delay because this is a single delivery of a
> single message with
two recipients.
and this:
> Note also that your previous > 50/s is likely due to the default recipient
> limit, and we've just
been chasing ghosts.
and this in the manual with a default of 50:
default_destination_recipient_limit (default: 50)
The default maximal number of recipients per message delivery.
I think it was reasonable to try reducing the
default_destination_recipient_limit from 50. I did try
several values between 50 and 1.
...don
support (at) microtechniques.com
