TLS has been wedged into SMTP to encrypt email in transit, but failing back to clear-text transmission is still the default on a significant number of servers on the Internet to ensure delivery.

Why Do Domain Owners Need SMTP TLS Reporting? As a domain owner, you need to always be informed and updated about email delivery failures, which makes TLS reporting an indispensable aspect of your ...

Top 10 Mxtoolbox Alternatives PowerDMARC PowerDMARC is an all-in-one email security platform that comes with a comprehensive suite of authentication protocols. The platform helps businesses from all ...

Finally, TLS ensures that the data transmitted between the client and server has not been altered or corrupted during transit by employing message authentication codes (MACs).

The SMTP DANE security protocol uses a TLS Authentication (TLSA) DNS record to verify the identity of destination mail servers and the authenticity of the certificates used for securing email ...

By default TLS/SSL for SMTP is disabled. It can be enabled using the --tlsmode command line argument or TlsMode settings property: StartTls - Connection starts off without TLS and then switches to TLS ...

TLS reporting (TLS-RPT) is a protocol that will notify you, the domain owner when emails sent through your domain face issues with delivery. If an email fails to be sent due to an SMTP downgrade or ...

I recently deployed postfix-mta-sts-resolver on my iRedMail server (See this issue Snawoot/postfix-mta-sts-resolver#99 ) and would not get email deliverability to ProtonMail, Gmail and Outlook however ...