Since we officially started developing Stalwart on September 4th, 2021, we've come a long way in establishing a powerful and versatile open-source mail and collaboration server. The very first commit, made on October 3rd, 2021, was to the mail-parser Rust crate, a fundamental component upon which Stalwart was built. It set the tone for our relentless pursuit of secure, reliable, and performant software.| Stalwart Labs Blog
(Avoid) Implementing STARTTLS STARTTLS seems simple. It consists of a single message to switch to encryption. But as you zoom in, you start to see increasingly intricate issues that keep unfolding. It’s best to avoid it. Sierpiński carpet. Infinite perimeter and zero area. Start with a square, split the square into 9 equal squares, remove the central square, and continue recursively. Yet… someone needs it. You start bargaining: You know that STARTTLS is a real-world attack target.| Duesee's Blog