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go-chasquid-smtp/docs/relnotes.md
Alberto Bertogli 5c09138db8 chasquid-util: Remove dependency on docopt-go 
The docopt-go library is quite convenient, but it has been abandoned for
a while :(

Since we only use it for chasquid-util, this patch removes it and
replaces it with a custom small parser, that is a reasonable fit for the
required use cases.

The patch also adds a couple of tests to increase coverage.

NOTE: docopt-go accepted some undocumented behaviour, in particular the
use of "-a b" instead of "-a=b". The new parser does not, so some
user scripts may require updating.

I think this should be rare enough not to be worth the complexity of
adjusting the parser to allow it.
2021-01-16 23:21:35 +00:00

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Release notes

This file contains notes for each release, summarizing changes and explicitly noting backward-incompatible changes or known security issues.

1.7 (TODO)

  • chasquid-util no longer depends on the unmaintained docopt-go. If you relied on undocumented parsing behaviour before, your invocations may need adjustment. In particular, --a b is no longer supported, and --a=b must be used instead.

1.6 (2020-11-22)

  • Pass the EHLO domain to the post-data hook.
  • Add /exit endpoint to monitoring server.
  • Implement HAProxy protocol support (experimental).
  • Documentation updates.

1.5 (2020-09-12)

  • Add OpenMetrics exporter (compatible with Prometheus).
  • Support log rotation via SIGHUP, and other misc. logging improvements.
  • Fix error code on transient authentication issues.
  • Fix rspamd greylist action handling in the default hook.
  • Miscellaneous monitoring server improvements.

1.4 (2020-05-22)

  • Use the configured hostname in outgoing SMTP HELO/EHLO.
  • Allow config overrides from the command line.
  • Miscellaneous test improvements and code cleanups.

1.3 (2020-04-12)

  • Improved handling of DNS temporary errors.
  • Documentation updates (use of SRS when forwarding, Dovecot troubleshooting, Arch installation instructions).
  • Miscellaneous test improvements and cleanups.

1.2 (2019-12-06)

Security fixes:

  • DoS through memory exhaustion due to not limiting the line length (on both incoming and outgoing connections). Thanks to Max Mazurov (fox.cpp@disroot.org) for the initial report.

Release notes:

  • Fix handling of excessive long lines on incoming and outgoing connections.
  • Better error codes when DATA size exceeded the maximum.
  • New documentation sections (monitoring, release notes).
  • Many miscellaneous test improvements.

1.1 (2019-10-26)

  • Added hooks for aliases resolution.
  • Added rspamd integration in the default post-data hook.
  • Added chasquid-util aliases-add subcommand.
  • Expanded SPF support.
  • Documentation and test improvements.
  • Minor bug fixes.

1.0 (2019-07-15)

No backwards-incompatible changes. No more are expected within this major version.

  • Fixed a bug on early connection deadline handling.
  • Make DSN tidier, especially in handling multi-line errors.
  • Miscellaneous test improvements.

0.07 (2019-01-19)

No backwards-incompatible changes.

  • Send enhanced status codes.
  • Internationalized Delivery Status Notifications (DSN).
  • Miscellaneous test improvements.
  • DKIM integration examples and test.

0.06 (2018-07-22)

No backwards-incompatible changes.

  • New MTA-STS (Strict Transport Security) checking.

0.05 (2018-06-05)

No backwards-incompatible changes.

  • Lots of new tests.
  • Added a how-to and manual pages.
  • Periodic reload of domaininfo, support removing entries manually.
  • Dovecot auth support no longer considered experimental.

0.04 (2018-02-10)

No backwards-incompatible changes.

  • Add Dovecot authentication support (experimental).
  • Miscellaneous bug fixes to mda-lmtp and tests.

0.03 (2017-07-15)

Backwards-incompatible changes:

  • The default MTA binary has changed. It's now maildrop by default. If you relied on procmail being the default, add the following to /etc/chasquid/chasquid.conf: mail_delivery_agent_bin: "procmail".
  • chasquid now listens on a third port, submission-on-TLS. If using systemd, copy the etc/systemd/system/chasquid-submission_tls.socket file to /etc/systemd/system/, and start it.

Release notes:

  • Support submission (directly) over TLS (submissions/smtps/port 465).
  • Change the default MDA binary to maildrop.
  • Add a very basic MDA that uses LMTP to do the mail delivery.

0.02 (2017-03-03)

No backwards-incompatible changes.

  • Improved configuration checks and safeguards.
  • Fall back through the MX list on errors.
  • Experimental MTA-STS implementation (disabled by default).

0.01 (2016-11-03)

Initial release.