Re: [Exim] [sleclerc@actionweb.fr: Bug#119747: Problem with …

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Author: Philip Hazel
Date:  
To: Stephane Leclerc
CC: exim-users
Subject: Re: [Exim] [sleclerc@actionweb.fr: Bug#119747: Problem with host_reject_recipients and mysql]
On Sat, 17 Nov 2001, Stephane Leclerc wrote:

> >From my understanding, I should have:
>
> Message from 1.2.3.4  -> host_reject_recipients (1.2.3.4, ns.netkobe.gr.jp)
>                       -> refused

>
> With +allow_unknown, it should pass the test. Or in fact, no.


+allow_unknown is confusing in Exim 3. (I think it even confused me in
my previous answer.)

Without +allow_unkown, Exim denies access if it can't find a host name
when it needs one. So in the case of an option that denies, such as
host_reject_recipients, you do NOT want to set +allow_unknown if you
want to reject recipients without reverse DNS.

I'll repeat it just to be sure: +allow_unknown does NOT mean "include
unknown in this set of hosts". It DOES mean "allow access for unknown".

-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.