https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6670

             Bug #: 6670
           Summary: score summation sometimes produces incorrect results
           Product: Spamassassin
           Version: 3.3.2
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Score Generation
        AssignedTo: [email protected]
        ReportedBy: [email protected]
    Classification: Unclassified


Some sample headers with incorrectly evaluated (too low) scores.

X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on ***.***.com
X-Spam-Flag: NO
X-Spam-Status: NO, hits=5.00 required=5.00
X-Spam-Report: 
    *   10 BAYES_99 BODY: Bayes spam probability is 99 to 100%
    *      [score: 1.0000]
    *  2.3 FSL_HELO_BARE_IP_1 FSL_HELO_BARE_IP_1
    *  0.0 TVD_RCVD_IP4 TVD_RCVD_IP4
    *  0.0 TVD_RCVD_IP TVD_RCVD_IP
    *  1.2 RCVD_NUMERIC_HELO Received: contains an IP address used for HELO
    *  1.3 RCVD_IN_BL_SPAMCOP_NET RBL: Received via a relay in bl.spamcop.net
    *      [Blocked - see <http://www.spamcop.net/bl.shtml?41.209.65.157>]
    *  4.5 URIBL_AB_SURBL Contains an URL listed in the AB SURBL blocklist
    *      [URIs: elit-mug.ru]
    *  1.6 URIBL_WS_SURBL Contains an URL listed in the WS SURBL blocklist
    *      [URIs: elit-mug.ru]
    *  1.2 URIBL_JP_SURBL Contains an URL listed in the JP SURBL blocklist
    *      [URIs: elit-mug.ru]
    *  0.0 T_RCVD_IN_SEMBLACK RBL: Received from an IP listed in
    *      bl.spameatingmonkey.net
    *      [41.209.65.157 listed in bl.spameatingmonkey.net]
    *  0.0 T_URIBL_SEM_RED Contains a URI listed in urired.spameatingmonkey.net
    *      [URIs: elit-mug.ru]
    *  0.0 T_URIBL_SEM Contains a URI listed in uribl.spameatingmonkey.net
    *      [URIs: elit-mug.ru]
    *  1.4 RCVD_IN_BRBL_LASTEXT RBL: RCVD_IN_BRBL_LASTEXT
    *      [41.209.65.157 listed in bb.barracudacentral.org]
    *  0.0 T_SURBL_MULTI2 T_SURBL_MULTI2
    *  0.8 RDNS_NONE Delivered to internal network by a host with no rDNS
    *  0.0 T_SURBL_MULTI1 T_SURBL_MULTI1
    *  1.0 FROM_EXCESS_BASE64 From: base64 encoded unnecessarily


X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on ***.***.***
X-Spam-Flag: NO
X-Spam-Status: NO, hits=-1.50 required=5.00
X-Spam-Report: 
    *   10 BAYES_99 BODY: Bayes spam probability is 99 to 100%
    *      [score: 0.9976]
    *  0.0 FSL_HELO_NON_FQDN_1 FSL_HELO_NON_FQDN_1
    *  1.0 HK_NAME_FREE From name mentions free stuff
    *  0.0 HTML_MESSAGE BODY: HTML included in message
    *  1.6 URIBL_WS_SURBL Contains an URL listed in the WS SURBL blocklist
    *      [URIs: potiongrow.com]
    *  1.2 URIBL_JP_SURBL Contains an URL listed in the JP SURBL blocklist
    *      [URIs: potiongrow.com]
    *  0.8 RCVD_IN_SORBS_WEB RBL: SORBS: sender is an abusable web server
    *      [117.201.44.250 listed in dnsbl.sorbs.net]
    *  1.4 RCVD_IN_BRBL_LASTEXT RBL: RCVD_IN_BRBL_LASTEXT
    *      [117.201.44.250 listed in bb.barracudacentral.org]
    * -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high
    *      trust
    *      [117.201.44.250 listed in list.dnswl.org]
    *  0.8 RDNS_NONE Delivered to internal network by a host with no rDNS
    *  1.0 HELO_NO_DOMAIN Relay reports its domain incorrectly


X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on ***.***.***
X-Spam-Flag: NO
X-Spam-Status: NO, hits=-8.00 required=5.00
X-Spam-Report:
    *   10 BAYES_99 BODY: Bayes spam probability is 99 to 100%
    *      [score: 1.0000]
    * -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high
    *      trust
    *      [190.255.38.154 listed in list.dnswl.org]
    *  1.4 RCVD_IN_BRBL_LASTEXT RBL: RCVD_IN_BRBL_LASTEXT
    *      [190.255.38.154 listed in bb.barracudacentral.org]
    *  1.7 URIBL_DBL_SPAM Contains an URL listed in the DBL blocklist
    *      [URIs: kresloshiatsu.com]
    *  0.0 HTML_MESSAGE BODY: HTML included in message
    *  0.8 RDNS_NONE Delivered to internal network by a host with no rDNS
    *  2.5 DOS_OE_TO_MX Delivered direct to MX with OE headers


X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on ***.***.***
X-Spam-Flag: NO
X-Spam-Status: NO, hits=-1.50 required=5.00
X-Spam-Report:
    *  0.0 FSL_HELO_NON_FQDN_1 FSL_HELO_NON_FQDN_1
    *  1.0 HK_NAME_FREE From name mentions free stuff
    *  0.0 HTML_MESSAGE BODY: HTML included in message
    *  7.0 BAYES_95 BODY: Bayes spam probability is 95 to 99%
    *      [score: 0.9897]
    *  1.6 URIBL_WS_SURBL Contains an URL listed in the WS SURBL blocklist
    *      [URIs: cuminsided.com]
    *  1.2 URIBL_JP_SURBL Contains an URL listed in the JP SURBL blocklist
    *      [URIs: cuminsided.com]
    *  1.3 RCVD_IN_RP_RNBL RBL: Relay in RNBL,
    *      https://senderscore.org/blacklistlookup/
    *      [46.17.153.49 listed in bl.score.senderscore.com]
    *  2.7 RCVD_IN_PSBL RBL: Received via a relay in PSBL
    *      [46.17.153.49 listed in psbl.surriel.com]
    *  1.4 RCVD_IN_BRBL_LASTEXT RBL: RCVD_IN_BRBL_LASTEXT
    *      [46.17.153.49 listed in bb.barracudacentral.org]
    *  0.0 RCVD_IN_SORBS_DUL RBL: SORBS: sent directly from dynamic IP address
    *      [46.17.153.49 listed in dnsbl.sorbs.net]
    *  0.8 RCVD_IN_SORBS_WEB RBL: SORBS: sender is an abusable web server
    * -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high
    *      trust [46.17.153.49 listed in list.dnswl.org]
    *  0.8 RDNS_NONE Delivered to internal network by a host with no rDNS
    *  1.0 HELO_NO_DOMAIN Relay reports its domain incorrectly

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