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=== maddy 0.1.0

**Stability:** This version is believed to be stable enough for use in
use non-critical deployments. Backward compatibility for database
structures and configuration syntax is not promised but will be
maintained if possible.

=== Implemented features

- IMAP4rev1 (RFC 3501) server implementation with some basic extensions
- SMTP (RFC 5321) server implementation with per-source, per-destination
delivery and filtering support
- Experimental local storage backend & IMAP index based on relational DB
- Sender authentication methods for inbound messages: DKIM, DMARC, SPF
- Remote server authentication methods for outbound messages: MTA-STS,
DANE, DNSSEC-aware resolver, STARTTLS Everywhere rule-set support
- PAM-based user authentication (not used by default)

In the end, it is not very flexible in some corners at the moment but if
you just want a generic mail server set-up, it will not be a big
trouble.

=== Known issues

- IMAP sequence numbers are not properly synchronized, making concurrent
mailbox access potentially unsafe, though the chance of actual data
damage is pretty small. See issue #188 for details.
- Support for IP literals in e-mail addresses is disabled. Attempt to
use them will result in a permanent error.