Spam detection software, running on the system "mx.iis.sinica.edu.tw", has
identified this incoming email as possible spam.  The original message
has been attached to this so you can view it (if it isn't spam) or label
similar future email.  If you have any questions, see
The administrator of that system for details.

Content preview:  美國學齡前兒童的測試題 美國學齡前兒童的測試題? 不會該撞牆!測測就知道~
   [...] 

Content analysis details:   (7.0 points, 6.9 required)

 pts rule name              description
---- ---------------------- --------------------------------------------------
 0.0 FREEMAIL_FROM          Sender email is commonly abused enduser mail provider
                            (alok95057[at]yahoo.com.tw)
 0.2 FREEMAIL_ENVFROM_END_DIGIT Envelope-from freemail username ends in
                            digit (alok95057[at]yahoo.com.tw)
 0.0 HTML_IMAGE_RATIO_08    BODY: HTML has a low ratio of text to image area
 0.0 MIME_HTML_MOSTLY       BODY: Multipart message mostly text/html MIME
 0.0 HTML_MESSAGE           BODY: HTML included in message
 0.7 MPART_ALT_DIFF         BODY: HTML and text parts are different
-0.1 DKIM_VALID_AU          Message has a valid DKIM or DK signature from author's
                            domain
 1.7 RAZOR2_CHECK           Listed in Razor2 (http://razor.sf.net/)
 2.4 RAZOR2_CF_RANGE_E8_51_100 Razor2 gives engine 8 confidence level
                            above 50%
                            [cf: 100]
 0.4 RAZOR2_CF_RANGE_51_100 Razor2 gives confidence level above 50%
                            [cf: 100]
-0.1 DKIM_VALID             Message has at least one valid DKIM or DK signature
 0.1 DKIM_SIGNED            Message has a DKIM or DK signature, not necessarily valid
-0.0 RCVD_IN_DNSWL_NONE     RBL: Sender listed at http://www.dnswl.org/, no
                            trust
                            [98.139.212.144 listed in list.dnswl.org]
 1.3 RDNS_NONE              Delivered to internal network by a host with no rDNS
 0.3 PLING_QUERY            Subject has exclamation mark and question mark
 0.0 UNPARSEABLE_RELAY      Informational: message has unparseable relay lines