Google Article: https://support.google.com/mail/answer/81126 Important: Starting February 2024, Gmail will require the following for senders who send 5,000 or more messages a day to Gmail accounts: A...
Google Article: https://support.google.com/a/answer/174124 Protect against spoofing & phishing, and help prevent messages from being marked as spam Set up DKIM to help protect your domain against sp...
ERRORS: * 421-4.7.0 This message does not have authentication information or fails to pass authentication checks. To best protect our users from spam, the message has been blocked. * ASPMX.L.GOOG...
We suggest you update your Google MX records and add SPF as well as DKIM records. For more Information see links below: IF YOUR SETUP IS: RECOMMENDED SETUP 10 aspmx.l.google.com [h...