Re: [exim] Block a domain by name

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Autor: Heiko Schlittermann
Data:  
Para: exim-users
Asunto: Re: [exim] Block a domain by name
Ronaldo Luiz de Carvalho <ronaldol@???> (Mi 08 Mai 2013 20:03:37 CEST):
> Hi all,
>
> I'm receiving a lot of Spam from two domains, that change the IP frequently,
> how could I block these domains by name?


In case you're talking about the envelope, the best way is to block
these domains in the rcpt acl. If you're using a (more or less) modified
default configuration, you may try this:

    acl_check_rcpt:


        accept  local_parts    = postmaster
                …


        deny    message        = Sender rejected for policy reasons.
                sender_domains = example.com : example.de





> Another question, there are a way to block messages using some words that
> are on the Subject?


    acl_check_data:



        deny    message         = Message rejected for policy reasons.
                condition       = ${if match{$h_subject:}{(?i:money|gold|girls)}


        accept


But, further investigation of the spec.txt file might be necessary ;-),
if you want to have more patterns, or if you want to scan more than the
header line(s) (there is a "regex" acl condition).

You may take care about the subject encoding ($rheader_* vs. $bheader_*
vs. $header_*).

Probably using a content filter/evaluator a la spamd is an option. Exim
provides a interface to such beasts too.

    Best regards from Dresden/Germany
    Viele Grüße aus Dresden
    Heiko Schlittermann
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