2.1.21rc1 (03-Feb-2016)

  New Features

    - There is a new dmarc_none_moderation_action list setting and a
      DEFAULT_DMARC_NONE_MODERATION_ACTION mm_cfg.py setting to optionally
      apply Munge From or Wrap Message actions to posts From: domains that
      publish DMARC p=none.  The intent is to eliminate failure reports to
      the domain owner for messages that would be munged or wrapped if the
      domain published a stronger DMARC policy.  See the descriptions in
      Defaults.py, the web UI and the bug report for more.  (LP: #1539384)

    - Thanks to Jim Popovitch there is now a feature to automatically turn
      on moderation for a malicious list member who attempts to flood a list
      with spam.  See the details for the Privacy options ... -> Sender
      filters -> member_verbosity_threshold and member_verbosity_interval
      settings in the web admin UI and the documentation in Defaults.py for
      the DEFAULT_MEMBER_VERBOSITY_* and VERBOSE_CLEAN_LIMIT settings for
      information.

    - bin/list_members now has options to display all moderated or all
      non-moderated members.

    - There is now a mm_cfg.py setting GLOBAL_BAN_LIST which is like the
      individual list's ban_list but applies globally to all subscribe
      requests.  See the description in Defaults.py for more details.

  i18n

    - Several Galician templates that were improperly encoded as iso-8859-1
      have been fixed.  (LP: #1532504)

    - The German translation has been updated by Mirian Margiani.

    - The Brazilian Portugese translation has been updated by Emerson Ribeiro
      de Mello.

  Bug fixes and other patches

    - Modified contrib/mmdsr to report held and banned subscriptions and DMARC
      lookups in their own categories.

    - Fixed a bug that could create a garbled From: header with certain DMARC
      mitigation actions.  (LP: #1536816)

    - Treat a poster's address which matches an equivalent_domains address as
      a list member for the regular_exclude_ignore check.  (LP: #1526550)

    - Fixed an issue that sometimes left no white space following
      subject_prefix.  (LP: #1525954)

    - Vette log entries for banned subscriptions now include the source of
      the request if available.  (LP: #1525733)

    - Submitting the user options form for a user who was asynchronously
      unsubscribed would throw an uncaught NotAMemberError.  (LP: #1523273)

    - It was possible under some circumstances for a message to be shunted
      after a handler rejected or discarded it, and the handler would be
      skipped upon unshunting and the message accepted.  (LP: #1519062)

    - Posts gated to usenet will no longer have other than the target group
      in the Newsgroups: header.  (LP: #1512866)

    - Invalid regexps in *_these_nonmembers, subscribe_auto_approval and
      ban_list are now logged.  (LP: #1507241)

    - Refactored the GetPattern list method to simplify extending @listname
      syntax to new attributes in the future.  Changed Moderate.py to use the
      GetPattern method to process the *_these_nonmembers lists.

    - Changed CookHeaders to default to using space rather than tab as
      continuation_ws when folding headers.  (LP: #1505878)

    - Fixed the 'pidfile' path in the sample init.d script.  (LP: # 1503422)

    - Subject prefixing could fail to collapse multiple 'Re:' in an incomming
      message if they all came after the list's subject_prefix.  This is now
      fixed.  (LP: #1496620)

    - Defended against a user submitting URLs with query fragments or POST
      data containing multiple occurrences of the same variable.
      (LP: #1496632)

    - Fixed bin/mailmanctl to check its effective rather than real uid.
      (LP: #1491187)

    - Fixed cron/gate_news to catch EOFError on opening the newsgroup.
      (LP: #1486263)

    - Fixed a bug where a delayed probe bounce can throw an AttributeError.
      (LP: #1482940)

    - If a list is not digestable an the user is not currently set to
      receive digests, the digest options will not be shown on the user's
      options page.  (LP: #1476298)

    - Improved identification of remote clients for logging and subscribe
      form checking in cases where access is via a proxy server.  Thanks to
      Jim Popovitch.  Also updated contrib/mmdsr for log change.

    - Fixed an issue with shunted messages on a list where the charset for
      the list's preferred_language had been changed from iso-8859-1 to
      utf-8 without recoding the list's description.  (LP: #1462755)

    - Mailman-Postfix integration will now add mailman@domain entries in
      data/virtual-mailman for each domain in POSTFIX_STYLE_VIRTUAL_DOMAINS
      which is a host_name of a list.  This is so the addresses which are
      exposed on admin and listinfo overview pages of virtual domains will
      be deliverable.  (LP: #1459236)

    - The vette log entry for DMARC policy hits now contains the list name.
      (LP: #1450826)

    - If SUBSCRIBE_FORM_SECRET is enabled and a user's network has a load
      balancer or similar in use the POSTing IP might not exactly match the
      GETting IP.  This is now accounted for by not requiring the last
      octet (16 bits for ipV6) to match.  (LP: #1447445)

    - DKIM-Signature:, DomainKey-Signature: and Authentication-Results:
      headers are now removed by default from posts to anonymous lists.
      (LP: #1444673)

    - The list admin web UI Mambership List search function often doesn't
      return correct results for search strings (regexps) that contain
      non-ascii characters.  This is partially fixed.  (LP: #1442298)