Domain Keys

DKIM implementation survey: prelim results

First off, I want to thank everyone who participated in the DKIM implementation survey. This week has been pretty hectic so far, so I haven’t had a chance to actually dig down into the data from the survey, but I thought I’d post some preliminary results.
The ESP survey had 45 respondents. 30% of those sent more than 15 million emails a month.
Of all the respondents: 40% are signing with Domain Keys, 51.1% are signing with DKIM.
Of all respondents: 79.5% are signing with Domain Keys and 78.8% are signing with DKIM to access services (whitelists or FBLs) provided by the ISPs.
50% of those not signing with Domain Keys are not doing so because customers have not requested it.  61% of those not signing with DKIM are not doing it because of technical difficulties with deployment.
The ISP survey had 16 respondents, with 37.5% handling less than 500,000 mailboxes and 18.8% handling more than 15 million mailboxes. 75% of respondents said they are not checking Domain Keys on inbound mail. 56% said they are not currently checking DKIM on inbound mail.
Only 10 ISPs answered the question if they plan to check either Domain Keys or DKIM.

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DKIM implementation survey

DKIM has been a hot topic of discussion on some of my mailing lists today. One of the open questions is what is holding up adoption of DKIM. I have my own theories, but thought I’d throw out some questions to see how ESPs and ISPs are currently using domain based reputation.
I have set up two surveys one for ESPs and one for ISPs. Responses are anonymous.
I’ll collect responses for a week and share the results.

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