Links for 7/8/9

With all the traveling I did last month, I’m still not back to full blogging speed. I have been slowly reading through the backlog of unread posts from my RSS feeds and there was lots of good stuff published.
Three myths about DKIM by John Levine. A very good explanation taking down some of the myths of DKIM. Also on the DKIM front, RFC 5585 DKIM Service Overview was published last month. According to Cisco, DKIM adoption is climbing. More information about DKIM is available at dkim.org and our own dkimcore.org.
The always awesome guys at Mailchimp have embraced twitter as part of their platform. Not only have they  set up their own service for link shortening so that links can be tweeted, but have also incorporated twitter stats into their mail dashboard.
Al has an insightful post on delivery, spam filtering vendors and the differences (or lack thereof) between B2C and B2B marketing. As I tell my customers, there is no switch inside the filtering scheme for “I know this person, they’re OK, let the mail in.”
Terry Zink has started a series about blacklists triggered by the recent SORBS announcement.  His first post, My take on blacklists, part 2, discusses how some people go about building a blocklist from scratch.
Happy 7-8-9 everyone.

Aiding and abetting violations of CAN SPAM
CAN SPAM compliance information in images

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AOL and DKIM

Yesterday, on an ESPC call, Mike Adkins of AOL announced upcoming changes to the AOL reputation system. As part of these changes, AOL will be checking DKIM on the inbound. Best estimates are that this will be deployed in the first half of 2009, possibly in Q1. This is something AOL has been hinting at for most of 2008.
As part of this, AOL has deployed an address where any sender can check the validity of a DKIM signature against the AOL DKIM implementation. To check a signature, send an email to any address at dkimtest.aol.com.
I have done a couple of tests, from a domain not signing with either DK or DKIM, from a domain signing with DK and from a domain signing with both DK and DKIM. In all cases, the mail is rejected by AOL. The specific rejection messages are different, however.
Unsighng domain: host dkimtest-d01.mx.aol.com[205.188.103.106] said: 554-ERROR: No DKIM header found 554 TRANSACTION FAILED (in reply to
end of DATA command)
DK signing domain: “205.188.103.106 failed after I sent the message.
Remote host said: 554-ERROR: No DKIM header found
554 TRANSACTION FAILED”
DK/DKIM signing domain: “We tried to delivery your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 554 554-PASS: DKIM authentication verified
554 TRANSACTION FAILED (state 18).”
As you can see, in all cases mail is rejected from that address. However, when there is a valid DKIM signature, the failure message is “554-PASS.”
As I have been recommending for months now, all senders should be planning to sign with DKIM early in 2009. AOL’s announcement that they will be using DKIM signatures as part of their reputation scoring system is just one more reason to do so.

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Links Post

Lifecycle Marketing on Bronto Blog. A good summary of issues in marketing to customers as they move through a relationship with recipients.
Blocked email: why me? on Cloudmark’s blog. A good introduction to blocking issues.
Tamara’s links for 4/16. She’s found a lot of good posts here, including multiple posts about unsubscribes and others on improving your email marketing program.
Speaking of unsubscribes, Loren McDonald discusses how the location of the unsubscribe link can affect reputation and email performance.

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Links to check out

Things are going well, if busy, here at the conference. I am attending lots of sessions and continuing to edit my talk for tomorrow. I thought I would list some random links that have come up here recently.
Lashback is advertising a joint webinar with Habeas, Publishers Clearinghouse and Lashback on how to protect brands and increase revenues with reputation management.
Terry Zink explains the new Microsoft advertising campaign. There are actually quite a few Microsoft people here at the conference, including the brain behind SNDS. We ran into each other yesterday evening, his room is right next to mine.
Ken Magill has an ongoing series of articles investigating Email Appenders, and all their various incarnations. This is an example of the confused jumble of connections that some companies use in order to hide.
Speaking of companies with bad reputations, the NY Times reports on Intercage’s loss of hosting. Atrivo/Intercage are notorious amongst the folks who fight malware and bots and have been called the American version of the Russian Business Network.

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