# Authorizing domains with web hosts As of February 1, 2024, Gmail and Yahoo are introducing new rules for sender verification and message classification, aimed at increasing the security and effectiveness of spam filtering. These changes require senders to update their settings, such as implementing SPF, DKIM and DMARC protocols, to ensure better deliverability and protection of their email communications. Therefore, we have prepared a guide describing how to add a customized DKIM entry to DNS settings on the side of the most popular web hosts. The instructions can also provide a hint on how to add the other records as well. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.messageflow.com/email/sender-security/senders-authorization/how-to-authorize-senders-in-messageflow/authorizing-domains-with-web-hosts.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.