To help reduce spam and to strengthen protections for users’ email accounts, both AOL mail and Yahoo have adopted a new policy by changing their DMARC requirements. The DMARC (Domain-based Message Authentication, Reporting & Conformance) policy change basically instructs mailbox providers to reject Yahoo mail that doesn't come from an Yahoo server.
Here’s an example of how DMARC works (taken from the DMARC.org site):
“A DMARC policy allows a sender to indicate that their emails are protected by SPF and/or DKIM, and tells a receiver what to do if neither of those authentication methods passes – such as junk or reject the message. DMARC removes guesswork from the receiver’s handling of these failed messages, limiting or eliminating the user’s exposure to potentially fraudulent & harmful messages. DMARC also provides a way for the email receiver to report back to the sender about messages that pass and/or fail DMARC evaluation.”
The change, which made in mid April, means two things. First, it will stop email that is being sent from spoofed accounts. This will be great for better Internet security and to crack down on spam email. Second, the change will affect bulk emails that have been previously authorized such as newsletters or email marketing campaigns. If those types of emails are being sent by an email service provider using an @yahoo.com or an @aol.com email address for the “from” portion of the address, the recipient will no longer be able to receive the mail, and instead it will be bounced back to the sender as undeliverable.
While Yahoo and AOL have already implemented the new policy, because of its effectiveness in reducing spam, other email service providers such as Gmail are sure to soon follow.
"Say you forward all your Dnet.net or Domain email messages to one Yahoo or AOL account. If a message originating from Yahoo or AOL is sent to your Dnet.net email address it will not be forwarded to Yahoo or AOL email address. "
To avoid being effected by the change, we recommend that you switch your emailing practices to only sending mail from your own domain name or through their servers. By sending emails through your own domain name, your emails will be vetted by the DMARC process and your emails will be authenticated.
Brittney Burns, SiteDart Author