The result is that any email sent which appears to be from aol.com, gmail.com, or yahoo.com, which originates from a different server (like eTapestry, Luminate Online, NetCommunity, Delivra, or any other mail server not controlled by AOL, Gmail, orYahoo) will be rejected by any server checking DMARC records (including most if not all of the top domains like Hotmail, Comcast, Gmail, AOL, and Yahoo).
The reason behind the decision can be found here http://postmaster-blog.aol.com/2014/04/22/aol-mail-updates-dmarc-policy-to-reject/ and here http://yahoomail.tumblr.com/post/82426900353/yahoo-dmarc-policy-change-what-should-senders-do.
We anticipate that the rest of the free email providers will likely follow suit soon and publish their own DMARC records.
For organizations using G Suite, settings can be changed and the SPF records can be configured to allow these emails to send. Please see https://support.google.com/a/answer/2466580?hl=en for information to set this up through Google. The IP addresses that eTapestry uses to send emails can be found in Why are emails sent from eTapestry being sent to Spam?.