n my recent OpenNTF webinar on modern E-mail Server operations, I covered several SMTP-related protocols like DKIM, SPF, and DMARC. However, with ongoing efforts to enhance the security of SMTP, new protocols have emerged, and these are the focus of this article.
Two weeks after my OpenNTF presentation, my former colleague Erwin Stamer, contacted me regarding the DANE status of my domain as it was yellow instead of green. He was looking at the status of my domain as they were implementing it at his employer (a large Dutch bank) and was looking for an example. I must admit that I initially had no idea what DANE was, but as it was in line with my presentation, I dived into it. DANE, MTA-STS and TLS-RPT all work together, but let’s look at them separately.
This is a companion discussion topic for the original entry at https://blog.martdj.nl/2024/11/07/modern-email-protocols-dane-mta-sts-and-tls-rpt/