Need to check the authentication status of your email sends? Wondering if you've got TLS, DKIM, and SPF configured properly? Here's an easy way to tell. Using your email platform or email service provider, send a message to [email protected]. Then, after a few minutes have passed, your email message will be added to the list of messages over on the XNND Authentication Page at http://xnnd.com/authentication/ and you'll be able to see whether or not your mail message was signed with a working DKIM signature, whether or not it passed SPF authentication, and whether or not TLS was used during mail transport. Any questions or feedback? Feel free to drop me a line in email or in comments.