Re: [exim] how to set up RelayCountry

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Author: Michael L Griffin
Date:  
To: exim-users
Subject: Re: [exim] how to set up RelayCountry
Holy smokes!

Anyone willing to try break this down into English for the rest of us
noobs who have no clue what this is or what it does. I would love to use it
as a learning experience and enrich my knowledge of Exim.

Regards
Michael

----- Original Message -----
From: "John W. Baxter" <jwblist3@???>
To: <exim-users@???>
Sent: Saturday, February 17, 2007 7:39 AM
Subject: Re: [exim] how to set up RelayCountry


On 2/15/07 7:22 AM, "Mike Cardwell" <exim-users@???> wrote:

> If you just want to add the header, you can do it natively in exim:
>
> Stick this in your data acl:
>
> warn set acl_m0 =
>      acl        = acl_relay_countries
>      condition  = ${if ! eq{$acl_m0}{}}
>      message    = X-Relay-Countries: $acl_m0

>
> Create a recursive acl as follows:
>
> acl_relay_countries:
>    warn set acl_m3 = ${if eq{$acl_m3}{}{$h_received:}{$acl_m3}}
>         set acl_m2 = ${if match{$acl_m3}{\N^[^\[]+\[([^\]]+)\]\N}{$1}{}}
>         set acl_m3 = ${sg{$acl_m3}{\N^[^\[]+\[([^\]]+)\](.*)\N}{\$2}}
>    warn condition  = ${if match{$acl_m2}{\N^\d{1,3}(\.\d{1,3}){3}$\N}}
>         !condition = ${if match_ip{$acl_m2}{+private_networks}}
>         set acl_m5 =
> ${sg{$acl_m2}{\N^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$\N}{\$4.\$3.\$2.\$
> 1.zz.countries.nerd.dk}}
>         set acl_m5 = ${lookup dnsdb{txt=<,$acl_m5}{${uc:$value}}{UNKNOWN}}
>         set acl_m0 = ${if eq{$acl_m0}{}{$acl_m5}{$acl_m0 $acl_m5}}
>    warn !condition = ${if eq{$acl_m2}{}}
>         acl        = acl_relay_countries
>    accept

>
> I only briefly tested the above but it seems to work.
>
> There should be an obfuscated exim configuration contest.


Philip, thou hast builded a monster. ;-)

Mike, be grateful for the \N...\N construct (a relatively recent--compared
with my use of Exim--and most welcome addition).

--John



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