Re: [ietf-dkim] More on layer violations

2010-10-21 Thread J.D. Falk
On Oct 21, 2010, at 11:01 AM, Steve Atkins wrote: > On Oct 21, 2010, at 9:53 AM, Murray S. Kucherawy wrote: >> >> >> Take a tour through the eleven parts of Section 7 of RFC5451, and then >> Appendices A and C. They provide all kinds of warnings about >> misinterpreting the data provided, whi

Re: [ietf-dkim] More on layer violations

2010-10-21 Thread Hector Santos
-1. This is not a LAYER violation. DKIM is a protocol for RFC 822/2822/5322 data to: a) verify a message signature, and/or b) create a message signature. In order to do either requires INPUT that MUST be valid for the protocol to be fundamentally correct with its OUTPUT. Therefore it

Re: [ietf-dkim] More on layer violations

2010-10-21 Thread Steve Atkins
On Oct 21, 2010, at 9:53 AM, Murray S. Kucherawy wrote: > > > Take a tour through the eleven parts of Section 7 of RFC5451, and then > Appendices A and C. They provide all kinds of warnings about misinterpreting > the data provided, which amounts to pretty firm implementation advice, and > i

Re: [ietf-dkim] More on layer violations

2010-10-21 Thread Murray S. Kucherawy
> -Original Message- > From: John R. Levine [mailto:jo...@iecc.com] > Sent: Thursday, October 21, 2010 9:07 AM > To: Murray S. Kucherawy > Cc: ietf-dkim@mipassoc.org > Subject: More on layer violations > > Having pondered the layer thing some more, it occurs to me that we have > several de

[ietf-dkim] More on layer violations

2010-10-21 Thread John R. Levine
Having pondered the layer thing some more, it occurs to me that we have several decades of practice with software that validates the format of mail messages to a greater or lesser extent, with the emphasis on lesser. Different software depends on different bits of the message to be correct, whi