FYI, here's the verbose headers for that same one that flowed above:
X-Spam-Flag: YES
X-Spam-Score: 23.904
X-Spam-Level: ***********************
X-Spam-Status: Yes, score=23.904 tag=-9999 tag2=5 kill=6.4
tests=[BAYES_999=0.2, BAYES_99=3.5, DCC_CHECK=3.2,
DIGEST_MULTIPLE=0.293, HEADER_FROM_DIFFERENT_DOMAINS=0.001,
HTML_MESSAGE=0.001, HTML_MIME_NO_HTML_TAG=0.377,
MIME_HTML_ONLY=0.723,
MISSING_MID=0.497, NORMAL_HTTP_TO_IP=0.001,
OBFUSCATING_COMMENT=0.723,
RAZOR2_CF_RANGE_51_100=0.5, RAZOR2_CF_RANGE_E8_51_100=1.886,
RAZOR2_CHECK=2.5, RCVD_IN_BRBL_LASTEXT=1.449, RDNS_NONE=0.793,
SPF_HELO_SOFTFAIL=3, SPF_SOFTFAIL=3, T_HTML_TAG_BALANCE_CENTER=0.01,
URIBL_ABUSE_SURBL=1.25] autolearn=unavailable autolearn_force=no
X-Spam-Report:
* 3.5 BAYES_99 BODY: Bayes spam probability is 99 to 100%
* [score: 1.0000]
* 1.4 RCVD_IN_BRBL_LASTEXT RBL: No description available.
* [208.110.82.116 listed in bb.barracudacentral.org]
* 1.2 URIBL_ABUSE_SURBL Contains an URL listed in the ABUSE SURBL
* blocklist
* [URIs: 154.16.37.73]
* 0.0 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail
* domains are different
* 3.0 SPF_SOFTFAIL SPF: sender does not match SPF record (softfail)
* 3.0 SPF_HELO_SOFTFAIL SPF: HELO does not match SPF record (softfail)
* 0.0 NORMAL_HTTP_TO_IP URI: URI host has a public dotted-decimal IPv4
* address
* 0.2 BAYES_999 BODY: Bayes spam probability is 99.9 to 100%
* [score: 1.0000]
* 0.0 HTML_MESSAGE BODY: HTML included in message
* 0.7 MIME_HTML_ONLY BODY: Message only has text/html MIME parts
* 3.2 DCC_CHECK Detected as bulk mail by DCC (dcc-servers.net)
* 2.5 RAZOR2_CHECK Listed in Razor2 (http://razor.sf.net/)
* 1.9 RAZOR2_CF_RANGE_E8_51_100 Razor2 gives engine 8 confidence level
* above 50%
* [cf: 100]
* 0.5 RAZOR2_CF_RANGE_51_100 Razor2 gives confidence level above 50%
* [cf: 100]
* 0.3 DIGEST_MULTIPLE Message hits more than one network digest check
* 0.4 HTML_MIME_NO_HTML_TAG HTML-only message, but there is no HTML tag
* 0.5 MISSING_MID Missing Message-Id: header
* 0.8 RDNS_NONE Delivered to internal network by a host with no rDNS
* 0.7 OBFUSCATING_COMMENT HTML comments which obfuscate text
* 0.0 T_HTML_TAG_BALANCE_CENTER Malformatted HTML
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on
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