From: Leonardo Rodrigues Magalhães (leolistassolutti.com.br)
Date: Sun Feb 03 2008 - 20:17:43 CST

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Magnus Bäck escreveu:
> On Sunday, February 03, 2008 at 20:47 CET,
> Leonardo Rodrigues Magalhães <leolistassolutti.com.br> wrote:
>
> [...]
>
>
>> Could you explain me, just to clarify about this questions, what
>> would be the difference on using OK and DUNNO on this kind of check ?
>>
>
> OK terminates the traversal of the whole restriction list and
> returns OK (possibly causing the message to be accepted if no
> other smtpd_xxx_restrictions rejects the message) while DUNNO
> only terminates the current restriction without returning any
> result. In this particular case, it prevents the DUNNO clients
> from getting caught by the 0.0.0.0/0 catchall and thus being
> subject to reject_unknown_reverse_client_hostname. Had you used
> OK instead you would also have escaped from r_u_r_c, but you
> would also bypass all remaining restrictions and effectively
> whitelist the client. That would probably not be desirable.
>
>

    couldnt have been better explained. Thanks a lot Magnus and Victor
for answering this thread.

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        Leonardo Rodrigues
        Solutti Tecnologia
        http://www.solutti.com.br

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