DMARC (Domain-based Message Authentication, Reporting & Conformance) is an industry-recognized policy that helps a domain decide whether incoming email messages are safe to be accepted. The policy—designed to prevent fraudulent emails and phishing scams—routes the email to a spam folder or bounces the message back if it fails a certain type of authentication.
Several free email providers (Yahoo and AOL) have already applied the DMARC policy, while others will soon be integrating it (Gmail, Outlook, Hotmail, and others).Your business may be impacted if you use a free email provider as the ‘from’ address for Constant Contact. Strict DMARC policies may misidentify legitimate marketing emails as fraudulent—and tell receiving servers to reject your incoming email because it was sent through Constant Contact rather than a Google server, for example. This policy affects all email marketing companies.