Re: OpenDKIM + dk-milter = Overkill

From: J.D. Falk <jdfalk-lists_at_cybernothing.org>
Date: Fri, 28 Jan 2011 16:19:48 -0800

On Jan 26, 2011, at 9:10 PM, Steve Jenkins wrote:

> So after testing just now with a Yahoo! Mail account myself, it
> appears that Yahoo! puts their little "Signed by DomainKeys" icon on
> an incoming message that is signed with DomainKeys, but doesn't put
> the icon there (or do anything special in the user interface) if it's
> only signed with DKIM.
>
> Again, I have zero data on deliverability comparison, but the fact
> that Yahoo! would display an icon (whose intent is clearly to increase
> the recipient's trust of a message) only with DK and not with DKIM is
> mind-boggling! Are they just being stubborn about their intellectual
> property rights around DomainKeys vs. DKIM?

No, the people at Yahoo! who worked on DomainKeys also worked on DKIM -- and we're still around.

The difference is that we felt comfortable placing the icon when the signature was tied to the From: header (DK), and not so comfortable when it's not (DKIM sans ADSP.) This was entirely a usability decision: users see From: and they see the icon, they don't see anything else.

I don't know what the current Yahoos' plans are, but I suspect that increased adoption of ADSP will eventually make them comfortable with the icon again.

I do, however, know (direct from current Yahoos) that the myth about improved deliverability for DK and not DKIM is entirely untrue, and will always be untrue. Sadly, they haven't taken my advice to start slowly decreasing deliverability for messages signed with DK only.
Received on Sat Jan 29 2011 - 00:20:00 PST