Problem with whitelist_from_rcvd and forged revers: msg#01207 users-spamassassin

Hi,

I was under the impression that whitelist_from_rcvd checks if the
reverse lookup is forged. But still with the following rule

whitelist_from_rcvd *@alita.karotte.org localhost

the attached mail is whitelisted because 220.231.127.15 resolves to
localhost. Am I doing something wrong or is this a bug?

Regards,

Sebastian

>From ntchel@xxxxxxxxxxxxxxxx Thu Jul 30 13:49:11 2009
Return-Path: <ntchel@xxxxxxxxxxxxxxxx>
X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on alita.karotte.org
X-Spam-Level:
X-Spam-Status: No, score=-77.7 required=5.0 tests=BAYES_60=1,
HTML_IMAGE_ONLY_04=2.041,HTML_MESSAGE=0.001,HTML_SHORT_LINK_IMG_1=0.001,

MIME_HTML_ONLY=1.457,RAZOR2_CF_RANGE_51_100=0.5,RAZOR2_CF_RANGE_E8_51_100=1.5,
RAZOR2_CHECK=0.5,RCVD_IN_BL_SPAMCOP_NET=1.96,RCVD_IN_PBL=0.905,
RCVD_IN_SORBS_WEB=0.619,RCVD_IN_XBL=3.033,SARE_HTML_A_BODY=0.742,
SARE_HTML_IMG_ONLY=1.666,SPF_FAIL=0.693,TVD_SPACE_RATIO=2.219,
URIBL_BLACK=1.955,URIBL_JP_SURBL=1.501,USER_IN_WHITELIST=-100
autolearn=no
bayes=0.7770 version=3.2.5
Received: from alside.com (localhost [220.231.127.15] (may be forged))
by alita.karotte.org (8.14.3/8.14.3/Debian-5) with SMTP id
n6UBn1BJ021997
for <webmaster@xxxxxxxxxxxxxxxxx>; Thu, 30 Jul 2009 13:49:05 +0200
X-DKIM: Sendmail DKIM Filter v2.8.2 alita.karotte.org n6UBn1BJ021997
Date: Thu, 30 Jul 2009 13:49:01 +0200
Message-Id: <200907301149.n6UBn1BJ021997@xxxxxxxxxxxxxxxxx>
To: <webmaster@xxxxxxxxxxxxxxxxx>
Subject: Delivery Status Notification
From: <webmaster@xxxxxxxxxxxxxxxxx>
MIME-Version: 1.0
Importance: High
Content-Type: text/html
Status: RO
Content-Length: 324
Lines: 6

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
[..]

--
GPG Key-ID: 0x76B79F20 (0x1B6034F476B79F20)
'Are you Death?' ... IT'S THE SCYTHE, ISN'T IT? PEOPLE ALWAYS NOTICE THE SCYTHE.
-- Terry Pratchett, The Fifth Elephant

Problem with whitelist_from_rcvd and forged reverse lookup: msg#01207

users-spamassassin