Tag: STS

Stronger Email Security with SMTP MTA STS: Strict Transport Security

July 25, 2018

Email transmission between servers has historically been extremely insecure. A new draft internet standard called “SMTP Strict Transport Security” or “SMTP MTA STS” is aiming to help all email providers upgrade to a much more secure system for server-to-server mail transmission. This article lays out where we are currently in terms of email transmission security […]

ARC and SMTP MTA-STS: The State of Domain-based Email Authentication – Part 3

September 19, 2017

We’ll close (for now) our three part series on the state of domain-based authentication for emails by completing the story on technologies being deployed or defined to improve the security of the email ecosystem. In Part 1, we wrote about using Sender Policy Framework (SPF) and DomainKeys Identified Mail (DKIM) to authenticate the sending mail […]