From CALLER@test.ex Tue Mar 02 09:44:33 1999
Received: from CALLER by the.local.host.name with local (Exim x.yz)
	(envelope-from <CALLER@test.ex>)
	id 10HmbD-0005vi-00
	for USERX@KNOWN.DOMAIN; Tue, 2 Mar 1999 09:44:33 +0000
Date: Tue, 2 Mar 1999 09:44:33 +0000
Message-Id: <E10HmbD-0005vi-00@the.local.host.name>
From: CALLER_NAME <CALLER@test.ex>
domainlist: dd=data for known.domain lpd=data for userx
domain_data: data for known.domain
local_part_data: data for userx

Test to uppercased local part USERX@KNOWN.DOMAIN