Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread Murray S. Kucherawy
On Thu, Apr 2, 2015 at 12:42 PM, Rolf E. Sonneveld r.e.sonnev...@sonnection.nl wrote: if DMARC is really the succes that dmarc.org claims it is [1] and with so many of the big ESPs around here [2] I fail to see why it would be so difficult to involve the MUA developers of these same ESPs?

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread Murray S. Kucherawy
On Thu, Apr 2, 2015 at 11:42 AM, Murray S. Kucherawy superu...@gmail.com wrote: If the input is the message and the output is a set of zero or more SDIDs representing domains whose signatures validated, then I don't think it matters if we go the v=2 route or the new header field name route,

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread Douglas Otis
On Apr 2, 2015, at 11:08 AM, John Levine jo...@taugh.com wrote: Handled by whom? If we're talking about telling MUAs Don't render the unsigned part of the content the same way as the signed content, then a bunch of additional complexities begin to appear: We went over all of this ages

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread John R Levine
So receipt of a message signed in the new form will likely produce an incorrect signature validation, ... I wondered about that, too, so before I proposed a version bump, I took a look at the code that people use: * Murray's opendkim C library: checks that the version is 0.5 or 1, fails

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread Dave Crocker
On 4/1/2015 8:22 PM, John Levine wrote: DKIM-Signature: v=2; d=example.com; ... DaveKIM-Signature: v=1; d=example.com; ... In this particular case, the incompatibility is a new kind of must handle tag suggested by Ned Freed with the new rule that if a verifier doesn't understand it, the

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread ned+dmarc
In the latter case, it's really an entirely new protocol, which should be identified by the next-lower protocol, rather than by using the version field as an in-bred demultiplexing field. I suppose, but if the two procols are 99% the same, and the new one is upward compatible with the old

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread Murray S. Kucherawy
On Thu, Apr 2, 2015 at 6:25 PM, John R Levine jo...@taugh.com wrote: So receipt of a message signed in the new form will likely produce an incorrect signature validation, ... I wondered about that, too, so before I proposed a version bump, I took a look at the code that people use: *

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread John R Levine
On the signing side, the signer has the new option of adding a conditional signature, but all of the old options still work. Protocols are defined by bits over the wire, not APIs. They're defined by both. The main reason we published RFC 5672 was to clarify that the API returns the value of

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread John R Levine
That is, the 'payload' of DKIM is the delivery of a validated domain name. In the original specification, we failed to properly specify which of the two delivered identifiers (d= and s=) was that promised payload. These hairs are split too finely for me to understand. The DKIM validator

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread John Levine
In article 551cc3fe.10...@dcrocker.net you write: On 4/1/2015 8:22 PM, John Levine wrote: In the latter case, it's really an entirely new protocol, which should be identified by the next-lower protocol, rather than by using the version field as an in-bred demultiplexing field. I suppose, but

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread Dave Crocker
On 4/2/2015 8:14 AM, John R Levine wrote: On the signing side, the signer has the new option of adding a conditional signature, but all of the old options still work. Protocols are defined by bits over the wire, not APIs. They're defined by both. Sorry, no. Or rather, while it is common

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread Anne Bennett
Murray S. Kucherawy responds to my (not-so-new) suggestion: Some days ago I tentatively suggested signing only part of some message parts, in particular part of the Subject header (excluding any future additions of [list-identification]), As I recall this was considered during the

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread Dave Crocker
On 4/2/2015 9:02 AM, John R Levine wrote: That is, the 'payload' of DKIM is the delivery of a validated domain name. In the original specification, we failed to properly specify which of the two delivered identifiers (d= and s=) was that promised payload. These hairs are split too finely

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread Murray S. Kucherawy
On Thu, Apr 2, 2015 at 9:18 AM, Dave Crocker d...@dcrocker.net wrote: The main difference I see is that if we call v2 something else, we now have a tedious administrative exercise of finding every place something refers to DKIM and change it to DKIM or DKIM-plus. This does not strike me

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread John Levine
Handled by whom? If we're talking about telling MUAs Don't render the unsigned part of the content the same way as the signed content, then a bunch of additional complexities begin to appear: We went over all of this ages ago when DKIM was young. It should all be in the DKIM WG archives. -

Re: [dmarc-ietf] Third Party Sender DMARC Adaptations

2015-04-02 Thread Terry Zink
What sorts of things do you want to see in an MUA? - Gmail says, of messages in the spam folder, “This message is here because others marked it as spam.” - If you enable it in Gmail, they also put a key beside authenticated messages - Outlook.com/Hotmail has a Green Shield in the List view next