Hi! For months I have had a page on my website that has a contact form. When you submit it, it emails me the message to my yahoo account. As of today however, I get a Mail delivery failed: returning message to sender message in my helio email acount. It states this: If you received this error message, your message was not delivered because Yahoo was unable to verify that it came from a legitimate email sender. Yahoo uses three industry-wide authentication checks to verify that that emails are truly from the domains they claim to come from, and your email failed one or more of them: DKIM (Domain-Keys Identified Mail) SPF (Sender Policy Framework) DMARC (Domain-based Message Authentication, Reporting and Conformance) These standards are designed to eliminate an email user’s exposure to potentially fraudulent and harmful messages, and they have been adopted by all major email providers and many technology companies. I have no idea what this means, or how to fix it... All I know is NOTHING HAS CHANGED at least on my end... Can anyone help shed some light on this for me (in non texhnical terms, this is my first webste, and I barely know much at all.) Thanks everyone! p.s. I dont know how to subscribe to this thread, so could you please email me @ email@example.com please! Thanks guys!!