GNU Mailman 3 changes¶

Here is a history of user visible changes to Mailman.

3.3.3¶

(2021-02-02)

Bugs¶

Handle some UnicodeEncodeErrors in creating digests. (Closes #560)
Increased the size of the data column in the workflowstate table. (Closes #793)
Implemented a scrubber for plain text digests. (Closes #473)
The mailman gatenews command now adds original_size as a message attribute. (Extends fix for #762)
Handle FileNotFoundError when creating digest.mmdf file without a parent directory present. (Closes #699)
Fixed an issue where content filtering can throw UnicodeEncodeError when converting HTML to plain text. (Closes #798)
A bounce for a non-existent list is now handled. (Closes #799)
RFC 2047 From: headers in emailed join commands are now decoded. (Closes #802)
The mailman addmembers command now catches and reports a SubscriptionPendingError. (Closes #805)
RFC 2369 List-Owner header is now added when these headers are included. (Closes #809)
Header filters will now properly match RFC 2047 encoded headers. (Closes #815)
Mailman’s vette log discard messages now include the reasons. (Closes #816)
Increase the default REST API (gunicorn) timeout to 360 seconds from 30 as several API endpoinds can be very slow. (Closes #770)
Header filter rules are now properly processed after deletions and/or reordering. (Closes #818)
Folded To: list-confirm+token@... headers are now parsed correctly. (Closes: #819)

Command line¶

A new findmember mailman subcommand has been added to find to which lists and with which roles an address matching a given pattern belongs.
A new changeaddress mailman subcommand has been added to enable site admins to change a user’s address.

New Features¶

There is a new setting hold_digest in the [mailman] section of mailman.cfg. If this is set to yes, posts with a digest like Subject: header or which quote the digest masthead will be held for moderation.

REST¶

List configuration option send_goodbye_message is now exposed through the REST API. (See !737)
Allow updating an Addresses’ display_name attribute. (Closes #786)
Allow specifying a reason when rejecting a subscription request. (Closes #767)
REST API now exposes unsubscription requests that can be handled by Moderator. (Closes #768)

3.3.2¶

(2020-11-6)

Bugs¶

When importing 2.1 lists, ignore CR characters added by browsers in headers and footers. (Closes #701)
RFC 2369 headers are now added to notification messages. (Closes #710)
Bounce probes are now encoded in the correct charset. (Closes #712)
We now unfold address containing headers before parsing in avoid_duplicates. (Closes #725)
The dmarc rule no longer misses if DNS returns a name containing upper case. (Closes #726)
Fixed mailman.email.message.Message.as_string to not return unicode surrogates. (Closes #732)
Bounce probes can now be sent to a member subscribed as a User. (Closes #739)
A member subscribed as a User can now be unsubscribed. (Closes #734)
When a handler rejects or discards a message, it won’t be delivered or archived anyway. (Closes #752)
Messages forwarded when content filtering removes the entire message and filter_action is forward now go to owners as well as moderators. (Closes #753)
Handle TOCTOU conditions when there are two simultaneous subscription requests for the same email address. (Closes #748)
Removed unnecessary call to Lock().disown() from bin/master.py. (Closes #754)
Fixed an invalid logging call in bin/master.py. (Closes #756)
VERPed list welcome messages now have a correct envelope sender. (Closes #757)
Messages in digests now contain a Message: N header. (Closes #764)
The LMTP runner will now add a Message-ID: header if missing. (Closes #448 and #490)
The mailman gatenews command now adds original_size to the msgdata. (Closes #762)

Command line¶

New addmembers, delmembers and syncmembers mailman subcommands have been added. These provide more options and controls than the corresponding mailman members modes which are now deprecated. (Closes #686)
The mailman conf command without a -s/--section argument will now show sections defined only in mailman.cfg in addition to those from schema.cfg. (Closes #736)
Added a charset option to the import21 subcommand. (Closes #769)
The import21 subcommand will now truncate long SAUnicode values if the database is MySQL. (Closes #772)
The import21 subcommand no longer adds the entire legacy *_these_nonmembers list and then removes the non-regexps. It now just adds the regexps. (Closes #773)

REST¶

Add a new endpoint /lists/<listid>/requests/count which returns total number of pending requests. (Closes #713)
Subscription requests API now allows filtering requests with token_owner parameter. (Closes #714)
Add subscription_mode to Member resource so API clients can differentiate between subscription via address and via primary address of an user. (Closes #707)
Add /list/<listid>/held/count to get a count of total held messages. (Closes #713)
Add fields as an optional parameter in all the Member’s APIs to customize which fields are included in the resource. (Closes #716)
Expose emergency field of MailingList via REST API. (Closes #719)

Localization¶

Italian translations of the templates have been added.
The default charset for many languages is changed to utf-8. (Closes #747)

Others¶

Add a new archive_rendering_mode attribute to MailingList to configure what kind of rendering should Archivers use to render Emails. (Closes #720)
An address= option has been added to the email join command to allow requesting subscription of other than the sender of the email. (Closes #721)
Added the ability to invite members to a list. (Closes #510 and #730)
Made (un)subscription confirmation email subjects user friendly and translatable. (Closes #541)
Implemented a new email who command to obtain list membership.
Add support for dnspython>=2.0. (Closes #743)
Added information about pass_types, filter_extensions and pass_extensions to the content filtering doc. (Closes #775)

3.3.1¶

(2020-04-19)

Bugs¶

Allow action for header matches to be None in REST interface. (Closes #671)
It is now possible to add the list posting address with nonmember role, e.g. to give it a moderaction of discard. (Closes #633)
The issue of posting a message without a To: header to a fully personalized list throwing a KeyError has been fixed. (Closes #639)
Confirmation or moderator approval of a subscription from an address banned subsequent to subscribing will no longer succeed. (Closes #642)
Fixed an issue caused by the fix for #642 where email confirmation of a banned subscription address would cause a shunted message. (Closes #643)
Fixed a bug where the postfix_vmap file would merge two columns for long domain names. (Closes #651)
Fix failing test cases due to changed API in a new version of dkimpy. (Closes #655)
Mailman now auto-geneartes alias maps when it starts for the first time. (Closes #469)
Sending a bounce probe now resets bounce_score. (Closes #660)
Bounce probes which bounce are now properly recognized. (Closes #661)
Residual bounces are logged but are not processed further. (Closes #662)
Disabling delivery by bounce properly initializes some bounce info so warnings can be sent and the member eventually removed. (Closes #663)
Bouncing member is not removed until bounce_you_are_disabled_warnings_interval after the last warning was sent. (Closes #664)
Fixed recipient address in delivery disabled by bounce notice to the user. (Closes #665)
Residial bounces are now marked as processed. (Closes #669)
Find members API now searches for the Member’s display name too. (Closes #667)
Content filtering convert_html_to_plaintext no longer creates messages that can’t be flattened as_bytes. (Closes #677)
Removed an incorrect failing assertion when confirming a confirm_then_moderate unsubscription. (Closes #553)
Fix a bug due to incompatible API of a new version of importlib_resources library which causes Templates loading to fail. (Closes #691)
Fix a bug due to incompatible API of a new version of zope.intefaces. (See !606)
Import21 no longer tries to import banned addresses. (Closes #688)

Command line¶

A new mailman members --sync command has been added to help you synchronize subscribed mailing list members against a text list of subscription addresses. (see !545)

REST¶

Expose max_days_to_hold, accept_these_nonmembers, reject_these_nonmembers, discard_these_nonmembers, hold_these_nonmembers, personalize, and unsubscription_policy attributes of a MailingList through API. (See !570)
Add a new send_welcome_message flag when subscribing users to override MailingList’s default setting. (Closes #362)
Expose content filtering settings for MailingList. (Closes #694)
Add advertised attribute to MailingList object so Postorius doesn’t have to make multiple calls for Index Page. (See !608)
Expose filter_action attribute of MailingList through API. (See !609)
Unsubscribing a user by calling DELETE on a Member resources now honors Lists’s unsubscription_policy and also sends out notifications to user and admins if list is configured to do so. (Closes #759)

Features¶

Add support for processing of email bounce events. Thanks to Aaryan Bhagat for working on this as a part of his GSoC project and Thanks to Google for sponsoring the project as a part of GSoC.(See !584)

3.3.0 – “Tom Sawyer”¶

(2019-09-04)

Bugs¶

A list member with receive_list_copy set to False who is addressed in CC will now be removed from CC even if this results in no CC. (Closes #575)
X-Mailman-Approved-At header now has correct timezone. (Closes #584)
A spurious invalid FilterAction: discard. Treating as discard log message is eliminated. (Closes #592)
A post from a nonmember matching the legacy accept_these_nonmembers is now subject to subsequent rules rather than accepted immediately. (Closes #587)
Email attempts to subscribe a user who is banned or has a subscription already pending are now handled properly. (Closes #577 and #583)
It is no longer possible to add the list’s posting address with any role to a list. (Closes #599)
Fixed the nntp runner which was calling the nntplib.NNTP.post() method with a string object instead of bytes. (Closes #613)
A post with a Reply-To: the list address will no longer be shunted. (Closes #614)
Encoded (base64 or quoted-printable) HTML message bodies are now decoded for html_to_plaintext. (Closes #616)
Non-VERPed temporary failure DSNs are no longer reported as unrecognized bounces. (Closes #622)
Fix mailman