Show HN: SMTP Server in Rust with DMARC, Dane, MTA-STS, Sieve, OTEL Support (opens in new tab)

I am happy to announce Stalwart SMTP [1], a modern SMTP server developed in Rust with a focus on security, speed, and extensive configurability. It features built-in DMARC, DKIM, SPF and ARC support for message authentication, strong transport security through DANE, MTA-STS and SMTP TLS reporting, and offers great flexibility and customization thanks to its dynamic configuration rules and native support for Sieve scripts.

The project has been recently awarded a grant from NLNet and the European Commission's Next Generation Internet program to develop a mail server in Rust. The next step in the roadmap is to refactor the code base of the previously released Stalwart JMAP[2]/IMAP[1] servers and to create an integrated mail server solution that is simple to install and manage.

Any comments or suggestions are more than welcome!

[1]: https://github.com/stalwartlabs/smtp-server [2]: https://github.com/stalwartlabs/jmap-server [3]: https://github.com/stalwartlabs/imap-server