Alessandro Vesely wrote: > On 23/May/11 06:35, Hector Santos wrote: >> Alessandro Vesely wrote: >> >>> For example, MTAs that autoconvert from quoted-printable to 8bit, a >>> rather common circumstance. >> I did the following Content-Transfer-Encoding failure analysis: >> >> Failure rates for message top level encoding type >> +--------------------------------------------------------+ >> | enctype total bodyfail pct | >> |--------------------------------------------------------| >> | 8bit 31 25 80.6 | > > It is not clear what part of these 8bit failures is due to messages > that had been downgraded before signing, and then upgraded before > verifying.
None. Of the 31, 20 were from Keith Moore signed messages into the IETF-SMTP list with a 3rd party signature and Hoffman's list server (non-dkim aware) doing this: Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by hoffman.proper.com id p4BLC7Hl032165 These 20 all failed and the hop count was 6. It was the only list message, Of the remaining 11, all spam, all direct (hops=1), 5 failed - 2 domains - 3 pure American Spam and 2 Spanish Spam. Moore sent me a direct email recently, and from what I can see, its the same 3rd party signer with: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable -- Hector Santos, CTO http://www.santronics.com http://santronics.blogspot.com _______________________________________________ NOTE WELL: This list operates according to http://mipassoc.org/dkim/ietf-list-rules.html