MIME Lint v1.1.0 2012-09-08 is a strict syntax validator for Internet 
messages including MIME, RFC 5322, DSN (RFC 3464) and MDN (RFC 3798) elements 
which has be run on the attached message.  The result follows:

-----------
WARNING: line too long in header 'Received:' at line 1
ERROR: Missing mandatory item 'from' in header 'Received' at lines 3-4
UNKNOWN: unknown header 'X-Spam-Checker-Version' at line 5
UNKNOWN: unknown header 'X-Spam-Level' at line 6
UNKNOWN: unknown header 'X-Spam-Status' at lines 7-8
WARNING: line too long in header 'Received:' at line 11
UNKNOWN: unknown header 'X-Mailer' at line 16
WARNING: duplicate header 'From' at line 17
WARNING: use SMTP MAIL FROM/return-path instead of non-standard errors-to in 
         header 'Errors-To' at line 18
UNKNOWN: unknown header 'X-Mailer' at line 19
ERROR: missing mandatory header 'return-path' lines 1-23
OK: found part text/plain line 25
WARNING: Content-Transfer-Encoding mislabelled as 8-bit when 7-bit suffices, 
         line 26
-----------

Output lines begin with 'OK:' for informational messages, 'UNKNOWN:' for 
unregistered/unfamiliar extensions which may be incorrect, 'WARNING:' for 
poor usage which is either likely to cause problems or fails the 'generate 
conservative protocol' principle, and 'ERROR:' for standards violations.  If 
your result contains only 'OK:' results, your message passed MIME Lint v1.1.0 
2012-09-08 validation.

There is no guarantee that this validator is free of bugs itself, so feel 
free to contact <chris(dot)newman(at)oracle(dot)com> if you think you found an error in 
the validator or have a good idea to enhance the validator.