> >I'd like to use this, but got hurt by
> >reject_unknown_client
>
> how so?  I haven't really heard anybody complaining about it.

Only worried about poorly done DNS, but seems I misunderstood this filter

> >They are the bunches that we communicate with over healthcare matters
> >routinely.
>
> whitelists work

Have had to whitelist so many, alas...

> >Should I be worried?
>
> I don't think so

Thanks

> you already have your nice little script that reports  to/from addresses
of
> rejects.  a good tool, use to what these kinds of rejects, too.
white_list
> as needed.
Thats where i see things before the execs start yelling foul


> this is not a DNS check.
Thanks, misunderstood initially

> postfix gets a msg from [EMAIL PROTECTED], and tries to send from
> postmaster@imgatebox to [EMAIL PROTECTED]  if earthlink (exists
> and) says "unknown user firemann816", the postfix rejects the msg from
> firemann816.
>
> Today, I convinced two fairly high volume, badly hammered ISP's I work
with
> to let me implement reject_verified_sender.   So far, after 1000's of new
> rejects with this filter, neither is screaming about false positives,
> and  the results are extremely encouraging (even without harvesting the
> rejects for ip's and sender.domain).

Than I'm sold, I'm low volume...
THANKS
-A



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