We are thrilled to announce the release of Stalwart Mail Server 0.5.2, which brings two significant advancements: the integration of the ACME protocol for automatic TLS certificate deployment and support for the HAProxy Protocol. These features mark a substantial step forward in our commitment to enhancing the security and efficiency of Stalwart Mail Server.
You could also just run IMAP/JMAP/SMTP as separate components, I can’t see any place in the Stalwart documentation - or in the Docker image itself - where monolith is the only option.
I haven’t tested the setup myself yet, but me and another root are planning on testing a setup of Stalwart to replace a semi-broken IMAP/JMAP setup for a computer club, keeping the SMTP as is.