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: Au...
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 spoo...
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.GOOGLE.com Re...
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 20 alt1.aspmx.l.goog...