Exim spoofing feature acl_check_data doesnt work

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http://forums.cpanel.net – Hello, I following this post http://forums.cpanel.net/f43/block-e...tml#post957772 to prevent spoofing e-mail from webmail (ex. Roundcube). I've paste thin into BEGINACL box: Code: acl_check_data: deny  authenticated        = *  condition = ${if or {{ !eqi{$authenticated_id} {$sender_address} }\   { !eqi{$authenticated_id} {${address:$header_From:}} }\  }\  }  message        = Spoof! But this feature doesn't work. Sender domain is @example.com and when I've used custom FROM e-mail in Roundcube @fbi.gov e-ma (HowTos)