2.1.5

The 2.1.5 release is actually a tiny bug fix release that I'm combining with
the large 2.1.4 release.

• Bugfix for socket.SO_REUSEPORT.

• Squashed bugs related to socket.socket failing in child processes.
  These squashed bugs fix IPv6 which had a tendency of not working as expected.

• Added communication between supervisor and children, allow children to be
  restarted if they fail to communicate to the supervisor.

• Added mode= and delay= optionals to the listen and
  :ref:tls_listen directives. Allowing listeners to spawn on specific ports
  and act in different ways.

  When mode and delay are configured in a listener directive, that
  listener will ignore the global mode and delay options for that listener.
  Setting mode and delay on a listener will also disable
  dynamic-switches for that listener, automatically.

• Internal module loading changes

• Added test utilities to the test suite.

• The blackhole environment will be reset for each test.

• Added a lot of testing to supervisor, worker and child functionality.

• Added a --quiet mode to suppress warnings when using
  -ls/--less-secure, running as the root user or not using the
  :ref:tls_dhparams option.

• Added a warning when running the server as the root user without specifying
  a reduced privilege user and group.

• Improved shutdown procedure, now does a much better job of disconnecting
  clients and closing everything before exiting.

• Added an internal counter of invalid SMTP commands. Mitigate DoS attacks,
  maximum failed commands per connection is 10. Clients that violate this rule
  get disconnected.

2.1.3: Fixed TLS context in children

• Squashed a bug that caused children to not properly apply their TLS context.

2.1.2

• Squashed a bug that caused workers to be spawned with their old privileges
  when combined with the -d or --daemon flags and a reduced privilege
  user and group.
• Squashed a bug that caused the pid file to retain old privileges when given
  a reduced privilege user and group and the -d or --daemon flags.

2.1.1

(This is actually the planned 2.1.0 release, but PyPI refused to let me use
that version number)

• Fix SIZE= being parsed in the MAIL verb.
• Huge overhaul of testing, finally almost all of blackhole.smtp.Smtp
  is tested.
• Added worker processes.

2.0.14

• SMTP Submission (port 587) is automatically used as a listener alongside port
  25.
• Added SIZE= checks in MAIL FROM command, rather than waiting until
  DATA.
• Added EXPN verb. -- expn
• Updated many verbs to allow on-the-fly modification of return codes. --
  dynamic-responses
• Added a list of commands