From: Victor Duchovni (Victor.DuchovniMorganStanley.com)
Date: Wed Jan 30 2008 - 14:03:06 CST

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On Wed, Jan 30, 2008 at 04:05:43PM +0100, Andre H?bner wrote:

> Hi List,
>
> i try to set up etrn on my machine. Most of this is working.
> I used this tutorial: http://www.postfix.org/ETRN_README.html
> Now i have the problem to limit requests of etrn-domain x to client y
>
> I cannot find correct restrictions for smtpd_etrn_restrictions
> Either every client can request etrn or no one can. (or Server
> configuration error ;) )
> I did a try with:
>
> smtpd_etrn_restrictions =
> check_etrn_access hash:/etc/postfix/etrn-access
> reject
>
> in /etc/postfix/etrn-access i combined etrn-domain and ip of client who
> should be able to request but i have no idea about the correct format.

See http://www.postfix.org/RESTRICTION_CLASS_README.html. This does
not scale to lots of domains, as each will need a different client
access table. If you have a lot of domains, you need a policy service
that makes database queries based on the client ip, domain name pair.
Postfix itself does not have multi-key table support.

--
        Viktor.

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