Re: large deferred queue ('too many connections')

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large deferred queue ('too many connections')
\ Juan Miscaro (16 Jun 2007)
. \ Noel Jones (16 Jun 2007)
. . \ Juan Miscaro (16 Jun 2007)
. . . \ am.lists (16 Jun 2007)
. . . \ Noel Jones (16 Jun 2007)
. . . . \ Juan Miscaro (16 Jun 2007)

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Subject:	Re: large deferred queue ('too many connections')
Group:	Postfix-users
From:	Juan Miscaro
Date:	16 Jun 2007

--- Noel Jones <njones> wrote:

> At 08:53 PM 6/15/2007, Juan Miscaro wrote:
> >--- Noel Jones <njones> wrote:
> >
> > > At 07:12 PM 6/15/2007, Juan Miscaro wrote:
> > > >I have Postfix 2.3.2 running with Mailman. I am getting a lot
> of
> > > "too
> > > >many connections from you host" errors and my deferred queue
> fills
> > > up.
> > > >It can take up to 3 hours for it to empty. Since this is
> occuring
> > > so
> > > >regularly I want to deal with it intelligently. How can I tell
> > > Postfix
> > > >to stop delivering a single message to multiple recipients so
> > > quickly?
> > > >Is it with the default_destination_recipient_limit parameter?
> > >
> > > This is usually caused by incorrectly increasing the various
> > > *concurrency_limit settings. These shouldn't be raised above the
> > > default without consent of the postmaster on the target system.
> >
> >I forgot to say that we have many subscribers in a couple of
> domains.
> >It seems natural for such an MX server to refuse so many
> connections.
> >
> >I have not changed any of the default rate settings.
>
> I don't see any obvious problems in your postconf output.
>
> The best thing is to contact the destination postmaster and see about
>
> getting your server whitelisted.
> It may help to reduce the number of parallel connections for the
> problem domains.
>
> # main.cf
> transport_maps = hash:/etc/postfix/transport
> slow_desination_concurrency_limit = 3
>
> # transport
> example.com slow:
>
> # master.cf
> # slow is a copy of the smtp transport
> slow unix - - n - - smtp

Thank you. I'll try it out and see how it goes.

Juan

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