Here's a roundup of posts from me (and a few other folks) on the topic of Yahoo's recent DMARC policy change.
- DMARC: Please Be Careful! June 10, 2013. My high level overview of operational considerations for domain owners when implementing a DMARC policy.
- Up in arms about Yahoo's DMARC Policy? You're not alone. April 8, 2014. What are the three areas of impact caused by this change?
- Run an email discussion list? Here's how to deal with DMARC. April 9, 2014. My suggestions on how to modify a mailing list manager to "play nice" with Yahoo's DMARC policy.
- Who uses a Yahoo from address? April 10, 2014. Andrew Barrett reports on his sampling of a live mail stream to identify groups affected by the Yahoo policy change.
- How OnlineGroups.net used the Yahoo! DMARC crisis to make a better Mailing List Manager. April 10, 2014. Dan Randow explains how OnlineGroups.net stepped up to the challenge of making their platform work within the new confines established by Yahoo's policy change.
- Yahoo DMARC Policy: Why they did it. April 11, 2014. My best guess as to what drove Yahoo to make this policy change.
- Yahoo Statement on new DMARC Policy. April 12, 2014. A bit of information from Yahoo on why they made this change and their recommendations for what senders may want to do to maximize interoperability with the new policy.
- Ask Al: Is my personal domain affected by DMARC? April 14, 2014. Explaining the potential impact on a user's personal domain name when an ISP uses a "p=reject" DMARC policy.
On April 7th, Laura Atkins of Word to the Wise posted "a brief DMARC primer" to help explain the technical concepts related to Yahoo's recent policy change and what this could mean for you.