Mailing list configuration

Mailing lists can be configured via the REST API.

>>> mlist = create_list('ant@example.com')
>>> transaction.commit()

Reading a configuration

All readable attributes for a list are available on a sub-resource.

>>> dump_json('http://localhost:9001/3.0/lists/ant@example.com/config')
acceptable_aliases: []
admin_immed_notify: True
admin_notify_mchanges: False
administrivia: True
advertised: True
allow_list_posts: True
anonymous_list: False
archive_policy: public
autorespond_owner: none
autorespond_postings: none
autorespond_requests: none
autoresponse_grace_period: 90d
autoresponse_owner_text:
autoresponse_postings_text:
autoresponse_request_text:
bounces_address: ant-bounces@example.com
collapse_alternatives: True
convert_html_to_plaintext: False
created_at: 20...T...
default_member_action: defer
default_nonmember_action: hold
description:
digest_footer_uri:
digest_header_uri:
digest_last_sent_at: None
digest_send_periodic: True
digest_size_threshold: 30.0
digest_volume_frequency: monthly
digests_enabled: True
display_name: Ant
dmarc_mitigate_action: no_mitigation
dmarc_mitigate_unconditionally: False
dmarc_moderation_notice:
dmarc_wrapped_message_text:
filter_content: False
first_strip_reply_to: False
footer_uri:
fqdn_listname: ant@example.com
goodbye_message_uri:
header_uri:
http_etag: "..."
include_rfc2369_headers: True
info:
join_address: ant-join@example.com
last_post_at: None
leave_address: ant-leave@example.com
list_name: ant
mail_host: example.com
max_message_size: 40
max_num_recipients: 10
moderator_password: None
next_digest_number: 1
no_reply_address: noreply@example.com
owner_address: ant-owner@example.com
post_id: 1
posting_address: ant@example.com
posting_pipeline: default-posting-pipeline
reply_goes_to_list: no_munging
reply_to_address:
request_address: ant-request@example.com
require_explicit_destination: True
respond_to_post_requests: True
            send_welcome_message: True
subject_prefix: [Ant]
subscription_policy: confirm
volume: 1
welcome_message_uri:

Changing the full configuration

Not all of the readable attributes can be set through the web interface. The ones that can, can either be set via PUT or PATCH. PUT changes all the writable attributes in one request.

When using PUT, all writable attributes must be included.

>>> dump_json('http://localhost:9001/3.0/lists/'
...           'ant@example.com/config',
...           dict(
...             acceptable_aliases=['one@example.com', 'two@example.com'],
...             admin_immed_notify=False,
...             admin_notify_mchanges=True,
...             administrivia=False,
...             advertised=False,
...             anonymous_list=True,
...             archive_policy='never',
...             autorespond_owner='respond_and_discard',
...             autorespond_postings='respond_and_continue',
...             autorespond_requests='respond_and_discard',
...             autoresponse_grace_period='45d',
...             autoresponse_owner_text='the owner',
...             autoresponse_postings_text='the mailing list',
...             autoresponse_request_text='the robot',
...             display_name='Fnords',
...             description='This is my mailing list',
...             include_rfc2369_headers=False,
...             info='This is the mailing list information',
...             allow_list_posts=False,
...             digest_send_periodic=False,
...             digest_size_threshold=10.5,
...             digest_volume_frequency='yearly',
...             digests_enabled=False,
...             dmarc_mitigate_action='munge_from',
...             dmarc_mitigate_unconditionally=False,
...             dmarc_moderation_notice='Some moderation notice',
...             dmarc_wrapped_message_text='some message text',
...             posting_pipeline='virgin',
...             filter_content=True,
...             first_strip_reply_to=True,
...             convert_html_to_plaintext=True,
...             collapse_alternatives=False,
...             reply_goes_to_list='point_to_list',
...             reply_to_address='bee@example.com',
...             require_explicit_destination=False,
...             send_welcome_message=False,
...             subject_prefix='[ant]',
...             subscription_policy='moderate',
...             default_member_action='hold',
...             default_nonmember_action='discard',
...             moderator_password='password',
...             max_message_size='500',
...             respond_to_post_requests=True,
...             max_num_recipients='20',
...             ),
...           'PUT')
content-length: 0
date: ...
server: WSGIServer/...
status: 204

These values are changed permanently.

>>> dump_json('http://localhost:9001/3.0/lists/'
...           'ant@example.com/config')
acceptable_aliases: ['one@example.com', 'two@example.com']
admin_immed_notify: False
admin_notify_mchanges: True
administrivia: False
advertised: False
allow_list_posts: False
anonymous_list: True
archive_policy: never
autorespond_owner: respond_and_discard
autorespond_postings: respond_and_continue
autorespond_requests: respond_and_discard
autoresponse_grace_period: 45d
autoresponse_owner_text: the owner
autoresponse_postings_text: the mailing list
autoresponse_request_text: the robot
...
collapse_alternatives: False
convert_html_to_plaintext: True
...
default_member_action: hold
default_nonmember_action: discard
description: This is my mailing list
...
digest_send_periodic: False
digest_size_threshold: 10.5
digest_volume_frequency: yearly
digests_enabled: False
display_name: Fnords
dmarc_mitigate_action: munge_from
dmarc_mitigate_unconditionally: False
dmarc_moderation_notice: Some moderation notice
dmarc_wrapped_message_text: some message text
filter_content: True
first_strip_reply_to: True
footer_uri:
fqdn_listname: ant@example.com
...
include_rfc2369_headers: False
...
moderator_password: {plaintext}password
...
posting_pipeline: virgin
reply_goes_to_list: point_to_list
reply_to_address: bee@example.com
...
require_explicit_destination: False
respond_to_post_requests: True
send_welcome_message: False
subject_prefix: [ant]
subscription_policy: moderate
...

Changing a partial configuration

Using PATCH, you can change just one attribute.

>>> dump_json('http://localhost:9001/3.0/lists/'
...           'ant@example.com/config',
...           dict(display_name='My List'),
...           'PATCH')
content-length: 0
date: ...
server: ...
status: 204

These values are changed permanently.

>>> print(mlist.display_name)
My List

Sub-resources

Mailing list configuration variables are actually available as sub-resources on the mailing list. Their values can be retrieved and set through the sub-resource.

Simple resources

You can view the current value of the sub-resource.

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/config/display_name')
display_name: My List
http_etag: ...

The resource can be changed by PUTting to it. Note that the value still requires a dictionary, and that dictionary must have a single key matching the name of the resource.

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/config/display_name',
...           dict(display_name='Your List'),
...           'PUT')
content-length: 0
date: ...
server: ...
status: 204

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/config/display_name')
display_name: Your List
http_etag: ...

PATCH works the same way, with the same effect, so you can choose to use either method.

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/config/display_name',
...           dict(display_name='Their List'),
...           'PATCH')
content-length: 0
date: ...
server: ...
status: 204
>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/config/display_name')
display_name: Their List
http_etag: ...

Acceptable aliases

These are recipient aliases that can be used in the To: and CC: headers instead of the posting address. They are often used in forwarded emails. By default, a mailing list has no acceptable aliases.

>>> from mailman.interfaces.mailinglist import IAcceptableAliasSet
>>> IAcceptableAliasSet(mlist).clear()
>>> transaction.commit()
>>> dump_json('http://localhost:9001/3.0/lists/'
...           'ant@example.com/config/acceptable_aliases')
acceptable_aliases: []
http_etag: "..."

We can add a few by PUT-ing them on the sub-resource. The keys in the dictionary are ignored.

>>> dump_json('http://localhost:9001/3.0/lists/'
...           'ant@example.com/config/acceptable_aliases',
...           dict(acceptable_aliases=['foo@example.com',
...                                    'bar@example.net']),
...           'PUT')
content-length: 0
date: ...
server: WSGIServer/...
status: 204

You can get all the mailing list’s acceptable aliases through the REST API.

>>> response = call_http(
...     'http://localhost:9001/3.0/lists/'
...     'ant@example.com/config/acceptable_aliases')
>>> for alias in response['acceptable_aliases']:
...     print(alias)
bar@example.net
foo@example.com

The mailing list has its aliases set.

>>> from mailman.interfaces.mailinglist import IAcceptableAliasSet
>>> aliases = IAcceptableAliasSet(mlist)
>>> for alias in sorted(aliases.aliases):
...     print(alias)
bar@example.net
foo@example.com

The aliases can be removed by using DELETE.

>>> response = call_http(
...     'http://localhost:9001/3.0/lists/'
...     'ant@example.com/config/acceptable_aliases',
...     method='DELETE')
content-length: 0
date: ...
server: WSGIServer/...
status: 204

Now the mailing list has no aliases.

>>> aliases = IAcceptableAliasSet(mlist)
>>> print(len(list(aliases.aliases)))
0

Header matches

Mailman can do pattern based header matching during its normal rule processing. Each mailing list can also be configured with a set of header matching regular expression rules. These can be used to impose list-specific header filtering with the same semantics as the global [antispam] section, or to have a different action.

The list of header matches for a mailing list are returned on the header-matches child of this list.

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches')
http_etag: "..."
start: 0
total_size: 0

New header matches can be created by POSTing to the resource.

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches', {
...           'header': 'X-Spam-Flag',
...           'pattern': '^Yes',
...           })
content-length: 0
...
location: .../3.0/lists/ant.example.com/header-matches/0
...
status: 201

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches/0')
header: x-spam-flag
http_etag: "..."
pattern: ^Yes
position: 0
self_link: http://localhost:9001/3.0/lists/ant.example.com/header-matches/0

To follow the global antispam action, the header match rule must not specify an action key, which names the chain to jump to if the rule matches. If the default antispam action is changed in the configuration file and Mailman is restarted, those rules will get the new jump action. If a specific action is desired, the action key must name a valid chain to jump to.

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches', {
...           'header': 'X-Spam-Status',
...           'pattern': '^Yes',
...           'action': 'discard',
...           })
content-length: 0
...
location: .../3.0/lists/ant.example.com/header-matches/1
...
status: 201

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches/1')
action: discard
header: x-spam-status
http_etag: "..."
pattern: ^Yes
position: 1
self_link: http://localhost:9001/3.0/lists/ant.example.com/header-matches/1

The resource can be changed by PATCHing it. The position key can be used to change the priority of the header match in the list. If it is not supplied, the priority is not changed.

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches/1',
...           dict(pattern='^No', action='accept'),
...           'PATCH')
content-length: 0
date: ...
server: ...
status: 204
>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches/1')
action: accept
header: x-spam-status
http_etag: "..."
pattern: ^No
position: 1
self_link: http://localhost:9001/3.0/lists/ant.example.com/header-matches/1

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches/1',
...           dict(position=0),
...           'PATCH')
content-length: 0
date: ...
server: ...
status: 204
>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches')
entry 0:
    action: accept
    header: x-spam-status
    http_etag: "..."
    pattern: ^No
    position: 0
    self_link: .../lists/ant.example.com/header-matches/0
entry 1:
    header: x-spam-flag
    http_etag: "..."
    pattern: ^Yes
    position: 1
    self_link: .../lists/ant.example.com/header-matches/1
http_etag: "..."
start: 0
total_size: 2

The PUT method can replace an entire header match. The position key is optional; if it is omitted, the order will not be changed.

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches/1',
...           dict(header='X-Spam-Status',
...                pattern='^Yes',
...                action='hold',
...           ), 'PUT')
content-length: 0
date: ...
server: ...
status: 204

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches/1')
action: hold
header: x-spam-status
http_etag: "..."
pattern: ^Yes
position: 1
self_link: http://localhost:9001/3.0/lists/ant.example.com/header-matches/1

A header match can be removed using the DELETE method.

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches/1',
...           method='DELETE')
content-length: 0
...
status: 204

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches')
entry 0:
    action: accept
    header: x-spam-status
    http_etag: "..."
    pattern: ^No
    position: 0
    self_link: .../lists/ant.example.com/header-matches/0
http_etag: "..."
start: 0
total_size: 1

The mailing list’s header matches can be cleared by issuing a DELETE request on the top resource.

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches',
...           method='DELETE')
content-length: 0
...
status: 204

>>> dump_json('http://localhost:9001/3.0/lists/ant.example.com'
...           '/header-matches')
http_etag: "..."
start: 0
total_size: 0