[Mailman-Users] Mailman 2.1.18 final release

Mark Sapiro mark at msapiro.net
Tue May 6 19:37:58 CEST 2014

A critical incompatibility between the Mailman 2.1.18 final release and
Python versions older than 2.6.5 or thereabouts affecting the DMARC Wrap
Message action was discovered and fixed. This incompatibility also
existed in the 2.1.16 and 2.1.17 releases.

Thus, I have released Mailman 2.1.18-1 with a fix for this
incompatibility. Please use 2.1.18-1 and not 2.1.18.

These releases have new features to help with mitigation of the impacts
of DMARC on mailing lists as well as fixing several bugs.

Python 2.4 is the minimum supported, but Python 2.7 is recommended.

There are significant new i18n strings associated with the DMARC
mitigation features. If you are interested in helping with the
translations of these strings, see <http://wiki.list.org/x/MQ>.

There is also a new dependency associated with these features. Namely,
the new Privacy options -> Sender filters -> dmarc_moderation_action
feature requires that the dnspython <http://www.dnspython.org/> package
be available in Python.

See the attached README for more details.

Mailman is free software for managing email mailing lists and
e-newsletters. Mailman is used for all the python.org and
SourceForge.net mailing lists, as well as at hundreds of other sites.

For more information, please see:


Mailman 2.1.18-1 can be downloaded from


Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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2.1.18-1 (06-May-2014)

  Bug fixes and other patches

    - A critical incompatibility between the DMARC Wrap Message action and
      Python versions older than 2.6.x for some x <= 5 existed and caused
      Wrapped message to be shunted.  This is fixed.  (LP: #1316682)

    - Sender: headers are no longer removed in from_is_list Munge From
      actions.  (LP: #1315970)

2.1.18 (03-May-2014)


    - Thanks to Jim Popovitch and Phil Pennock for the branch that formed the
      basis of the dmarc_moderation_action feature.

    - Thanks to Franck Martin et al for the branch that formed the basis of
      the from_is_list feature.


    - There is a new dependency associated with the new Privacy options ->
      Sender filters -> dmarc_moderation_action feature discussed below.
      This requires that the dnspython <http://www.dnspython.org/> package
      be available in Python.  This package can be downloaded from the above
      site or from the CheeseShop <https://pypi.python.org/pypi/dnspython/>
      or installed with pip.

  New Features

    - The from_is_list feature introduced in 2.1.16 is now unconditionally
      available to list owners.  There is also, a new Privacy options ->
      Sender filters -> dmarc_moderation_action feature which applies to list
      messages where the From: address is in a domain which publishes a DMARC
      policy of reject or possibly quarantine.  This is a list setting with
      values of Accept, Wrap Message, Munge From, Reject or Discard. There is
      a new DEFAULT_DMARC_MODERATION_ACTION configuration setting to set the
      default for this, and the list admin UI is not able to set an action
      which is 'less' than the default.  The prior ALLOW_FROM_IS_LIST setting
      has been removed and is effectively always Yes. There is a new
      dmarc_quarantine_moderation_action list setting with default set by a
      which in turn defaults to Yes.  The list setting can be set to No to
      exclude domains with DMARC policy of quarantine from

      dmarc_moderation_action and from_is_list interact in the following way.
      If the message is From: a domain to which dmarc_moderation_action applies
      and if dmarc_moderation_action is other than Accept,
      dmarc_moderation_action applies to that message.  Otherwise the
      from_is_list action applies.

      Also associated with dmarc_moderation_action are configuration settings
      in more detail in Defaults.py.  There are also new vette log entries
      written when dmarc_moderation_action is found to apply to a post.


    - Added missing <mm-digest-question-start> tag to French listinfo template.
      (LP: #1275964)

  Bug Fixes and other patches

    - Removed HTML tags from the title of a couple of rmlist.py pages because
      browsers don't render tags in the title.  (LP: #265848)

    - Most Mailman generated notices to list owners and moderators are now
      sent as Precedence: list instead of bulk.  (LP: #1313146)

    - The Reply-To: munging options weren't honored if there was no
      from_is_list action.  (LP: #1313010)

    - Changed from_is_list actions to insert the list address in Cc: if the
      list is fully personalized.  Otherwise, the list address is only in
      From: and Reply-To: overrides it.  (LP: #1312970)

    - Fixed the Munge From action to only Munge the From: and/or Reply-To: in
      the outgoing message and not in archives, digests and messages sent via
      the usenet gateway.  (LP: #1311431)

    - Fixed a long standing issue in which a notice sent to a user whose
      language is other than that of the list can cause subsequent things
      which should be in the list's language to be in the user's language
      instead.  (LP: #1308655)

    - Fixed the admin Membership List so a search string if any is not lost
      when visiting subsequent fragments of a chunked list.  (LP: #1307454)

    - For from_is_list feature, use email address from original From: if
      original From: has no display name and strip domain part from resultant
      names that look like email addresses.  (LP: #1304511)

    - Added the list name to the vette log "held message approved" entry.
      (LP: 1295875)

    - Added the CGI module name to various "No such list" error log entries.
      (LP: 1295875)

    - Modified contrib/mmdsr to report module name if present in "No such list
      error log entries.

    - Fixed a NameError exception in cron/nightly_gzip when it tries to print
      the usage message.  (LP: #1291038)

    - Fixed a bug in ListAdmin._handlepost that would crash when trying to
      preserve a held message for the site admin if HOLD_MESSAGES_AS_PICKLES
      is False.  (LP: #1282365)

    - The from_is_list header munging feature introduced in Mailman 2.1.16 is
      no longer erroneously applied to Mailman generated notices.
      (LP: #1279667)

    - Changed the message from the confirm CGI to not indicate approval is
      required for an acceptance of an invitation.  (LP: #1277744)

    - Fixed POSTFIX_STYLE_VIRTUAL_DOMAINS to be case-insensitiive.
      (LP: #1267003)

    - Added recognition for another simple warning to bounce processing.
      (LP: #1263247)

    - Fixed a few failing tests in tests/test_handlers.py.  (LP: #1262950)

    - Fixed bin/arch to not create scrubbed attachments for messages skipped
      when processing the --start= option.  (LP: #1260883)

    - Fixed email address validation to do a bit better in obscure cases.
      (LP: #1258703)

    - Fixed a bug which caused some authentication cookies to expire too soon
      if AUTHENTICATION_COOKIE_LIFETIME is non-zero.  (LP: #1257112)

    - Fixed a possible TypeError in bin/sync_members introduced in 2.1.17.
      (LP: #1243343)


    - Added to the contrib directory, a script from Alain Williams to count
      posts in a list's archive.

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