From owner-freebsd-chat  Fri May 31 15:18:52 2002
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From: "Dan Langille" <dan@langille.org>
Organization: DVL Software Limited
To: chat@freebsd.org
Date: Fri, 31 May 2002 18:18:35 -0400
MIME-Version: 1.0
Subject: Re: postfix: stopping spam sent to user@host.example.org
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On 31 May 2002 at 12:39, Jeremy C. Reed wrote:

> On Fri, 31 May 2002, Dan Langille wrote:
> 
> > I'm using postfix.  Is there a way to stop this spam?  i.e. block all
> > mail with a TO: field containing @host.example.com.
> 
> Have a look at your postfix's main.cf and read the small section about
> "header_checks".

Ahh, thank you.  Easily done.  For future readers, in 
/usr/local/etc/postfix/main.cf, I've added this line:

    header_checks = regexp:/usr/local/etc/postfix/header_checks

and header_checks contains:

/^to: *@host\.example\.org/ REJECT

Then do a "postfix reload".

Here is a sample rejection message:

   May 31 15:55:05 m20 postfix/cleanup[46233]: D37BB7A8D: reject: header
   To: <dan@host.example.org>; from=<dan@example.com>
   to=<dan@host.example.org>;

I can see myself using this feature quite a bit.  Thanks again.
-- 
Dan Langille
The FreeBSD Diary - http://freebsddiary.org/ - practical examples


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