Wietse Venema:
> Kranti Kiran Patnaik:
> > Sir,
> > 
> > >From my logs i found some as mentioned below.
> > delays=3994/44/0.09/1.5,
> 
> That is your problem. If 
> 
> 1) You have master.cf transports with low process limit (or low
> per-destinaton concurrency),

See here:

default_destination_concurrency_limit = 5
default_destination_recipient_limit = 5

That is totally ridiculous. Don ot chage settings when you 
are learning to use Postfix.

        Wietse

> AND
> 
> 2) Those transports have c/d delays that are more than a fraction
> of a second,
> 
> THEN all mail will pile up in your queue, even when some mail can
> be delivered in a fraction of a second.
> 
>       Wietse
> 
> > On Sat, Nov 23, 2013 at 8:35 PM, Wietse Venema <wie...@porcupine.org> wrote:
> > 
> > > Kranti Kiran Patnaik:
> > > > THank You, we have filled these forms. But still we are facing delay in
> > > > delivery, can you suggest with the postconf -n output that i have 
> > > > shared.
> > >
> > > The reason for delays is in the MAILLOG file.
> > >
> > > Look for the breakdown of the "delays=a/b/c/d" logging.
> > >
> > >    The format of the "delays=a/b/c/d" logging is as follows:
> > >
> > >    o      a = time from message arrival to last active queue entry
> > >
> > >    o      b = time from last active queue entry to connection setup
> > >
> > >    o      c = time in connection setup, including DNS, EHLO and STARTTLS
> > >
> > >    o      d = time in message transmission
> > >
> > > If your "c" numbers are not a fraction of a second then that is
> > > your problem.
> > >
> > >         Wietse
> > >
> > 
> > 
> > 
> > -- 
> > Thanks & Regards,
> > Kranti Kiran Patnaik
> > +91-924-633-52-62
> > 
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