[exim] Need help

I need to reject messages if send from smtp host relay
before host client.

Example for below header :

198P Received: from [10.23.10.45]
(helo=mail1.mailxx.com)
        by smtp.host.net with esmtp (Exim 4.66)
        (envelope-from <rqgcdnhz@???>)
        id 1HfEpz-0008Pi-0Y; Sat, 21 Apr 2007 19:37:11
+0700
152P Received: from mail2.mailxx.com ([172.16.2.4]) by
mail1.mailxx.com with Microsoft
SMTPSVC(6.0.3790.1830);
         Sat, 21 Apr 2007 02:54:01 +0700
140P Received: from aaa.bbb.ccc.ddd ([192.168.1.1]) by
mail2.mailxx.com  with Microsoft SMTPSVC(6.0.3790.0);
         Sat, 21 Apr 2007 02:53:59 +0700
149P Received: from ogvwdr47.yahoo.com.tw
(ogvwdr47.yahoo.com.tw [182.171.196.178]) by  with
SMTP id yxf6UDP6JWWh14715;
         Fri, 20 Apr 2007 18:39:09 -0100
038  Date: Fri, 20 Apr 2007 18:39:09 -0100
043F From: "Hays" <lfbxqjqsopzqbf@???>

I want to reject if messages arrive from
aaa.bbb.ccc.ddd but $host variable in exim is contain
client host 10.23.10.45.

Please help..

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