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Lindenii Mail Daemon

None of Postfix, OpenSMTPd, and maddy really suit my taste for a mail daemon, so I'm trying to write my own.

I also want a simple mailing list manager, but they're all rather difficult to set up correctly. IMO it'd be easier to integrate it into the SMTP daemon.

Plan

Implemented:

  • Receiving mail, SMTP side, with STARTTLS

Future:

  • ESMTP: 8BITMIME, SIZE, DSN
  • DKIM, DMARC, SPF, ARC
  • Receiving mail and mailbox synchronization via a custom protocol
  • Sending mail, outgoing side, with STARTTLS
  • Sending mail, incoming side, with TLS
  • A UNIX domain socket protocol for integration with mailing list and forge software (might be called the Lindenii Mail Delivery Protocol)
  • Receiving mail, IMAP side, with TLS (far future)