Delta ChatApr 2, 2025

new security milestone reached: #chatmail relay servers are hardened to only transfer end-to-end encrypted e-mail with metadata minimization. No cleartext message can enter or leave the secure chatmail network anymore.

We now talk about "chatmail relays" rather than servers as they only ephemerally store messages until delivery. Dirt cheap to run.

We opened up our #rust "chatmail core" infrastructure library and set up an overview of the community driven ecosystem ...

https://chatmail.at

Chatmail

Chatmail provides FOSS infrastructure for interoperable, secure, speedy and reliable end-to-end encrypted messaging. Check out clients as Arcane Chat, Bots or Delta Chat today!

Show threadvitaliyApr 5, 2025
@delta is it possible to detect or distinguish chatmail servers from any other mail server? I am interested because the censor can make a small scanner, which will connect to every mail server and collect a list of chatmail servers.
Show threadrakoo
@gvitalik

Try to create an account with random username and password, it should work :)
@delta
Apr 8, 2025 at 8:43pmWeb
Show threadDelta ChatApr 8, 2025
@rakoo @gvitalik even if such direct attempts can be mitigated relatively easily on the operator side, fingerprinting remains a possibility. Automating such approaches and blockings can easily cause collateral damage ... A large country once automated blocking of IP addresses for certain domains and thereby brought down the payment system in a big city after someone pointed their DNS entries to it. Then, there are shadowsocks and other proxies which are easy to use in delta. Cat and mouse.