January 2018 - Mailman-users - lists.mailman3.org

Unknown attribute: max_message_size
by Thor Atle Rustad 27 Jun '18

27 Jun '18

If I make changes here: https://example.com/postorius/lists/test2.example.com/settings/message_acce…, I get a warning that the Maximum Message Size field at the bottom is mandatory. However, if I put a number in that field and save, I get "Unknown attribute: max_message_size". That makes sense, since Mark states in https://lists.mailman3.org/archives/list/mailman-users@mailman3.org/message… that max_messages_size is not exposed in REST. What to do? I have Maxking mailman-docker but can easily copy files into the image if necessary. Thor

5 8

Disabling Gravatar
by Marvin Gülker 26 Apr '18

26 Apr '18

Hi everyone, I want to make you aware of a potential privacy problem in Mailman's Hyperkitty. Under the upcoming EU General Data Protection Regulation (GDPR)[1], which will be in force as of 2018-05-25, it is illegal to transmit data to third parties without a right to do so. Without going into the details, the inclusion of third party services into one's website is usually deemed such a transmission, and unless one has explicit consent of the user (e.g., by an optional (!), unticked ticking box) this is normally illegal (if one targets EU users). The GDPR does not affect private and family use (Art. 2(2)(c) GDPR), but the exact reach of that clause is yet to be determined; it certainly does not exclude company use of Mailman. I've found it's possible to disable the social login providers quite easily (we had this discussion here on the mailinglist recently), but I don't see an option to disable Gravatar. If there is one, please enlighten me, but anyway I want to propose this as a feature request against Hyperkitty. A GDPR-compliant implementation of Gravatar in Mailman would look like this: * In order to not transmit website visitor's data (IP address, browser info, etc) to Gravatar, Hyperkitty has to request the avatar image itself and not leave that to the user's browsers to do. In other words, the HTTP GET request needs to come from the server running Hyperkitty and the user's browser then just requests the avatar from the Hyperkitty server. Most likely easiest way to do this is to pre-download the avatar when an email is archived. * In order to not transmit the subscribers' data (email address, allows Gravatar to track the subscriber) to Gravatar illegally, the retrieval of the avatar image from Gravatar has to be disabled by default. Instead, an option needs to be added to the subscriber's control panel which he has to actively enable in order to have his Gravatar downloaded and thus used (privacy-by-default rule). I'm not saying Gravatar tracks people and sells the information gathered, though I have doubts on how Automattic makes money with the service. I'm just outlining the legal duties under the upcoming GDPR for service owners, which are independant of how Automattic processes the data in this specific case. Please don't dismiss this as some side feature not needed. The fines that can be imposed on service owners due to violation of the GDPR are very high (up to 20,000,000 € [that's 20 million euros, really]). Marvin [1]: http://eur-lex.europa.eu/legal-content/EN/TXT/?qid=1510481733260&uri=CELEX:… -- Blog: https://www.guelkerdev.de PGP/GPG ID: F1D8799FBCC8BC4F

5 5

disable sign-ups
by Peter Münster 14 Mar '18

14 Mar '18

Hi, I would like to add new accounts only manually, the mailman3 site should not be open for sign-ups. So I've added this code to settings.py: --8<---------------cut here---------------start------------->8--- from allauth.account.adapter import DefaultAccountAdapter class MyAccountAdapter(DefaultAccountAdapter): def is_open_for_signup(self, request): return False ACCOUNT_ADAPTER = 'MyAccountAdapter' --8<---------------cut here---------------end--------------->8--- It seems to work, but the user experience is not optimal: the user can click on "Sign Up", and then gets to "Server Error (500)". This is the log: --8<---------------cut here---------------start------------->8--- ERROR 2018-01-31 21:53:47,116 6769 django.request Internal Server Error: /accounts/signup/ Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/django/core/handlers/base.py", line 132, in get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/usr/lib/python2.7/site-packages/django/views/generic/base.py", line 71, in view return self.dispatch(request, *args, **kwargs) File "/usr/lib/python2.7/site-packages/django/utils/decorators.py", line 34, in _wrapper return bound_func(*args, **kwargs) File "/usr/lib/python2.7/site-packages/django/views/decorators/debug.py", line 76, in sensitive_post_parameters_wrapper return view(request, *args, **kwargs) File "/usr/lib/python2.7/site-packages/django/utils/decorators.py", line 30, in bound_func return func.__get__(self, type(self))(*args2, **kwargs2) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 210, in dispatch return super(SignupView, self).dispatch(request, *args, **kwargs) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 79, in dispatch **kwargs) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 182, in dispatch if not self.is_open(): File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 191, in is_open return get_adapter(self.request).is_open_for_signup(self.request) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/adapter.py", line 501, in get_adapter return import_attribute(app_settings.ADAPTER)(request) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/utils.py", line 150, in import_attribute pkg, attr = path.rsplit('.', 1) ValueError: need more than 1 value to unpack ERROR 2018-01-31 21:53:47,116 6769 django.request Internal Server Error: /accounts/signup/ Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/django/core/handlers/base.py", line 132, in get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/usr/lib/python2.7/site-packages/django/views/generic/base.py", line 71, in view return self.dispatch(request, *args, **kwargs) File "/usr/lib/python2.7/site-packages/django/utils/decorators.py", line 34, in _wrapper return bound_func(*args, **kwargs) File "/usr/lib/python2.7/site-packages/django/views/decorators/debug.py", line 76, in sensitive_post_parameters_wrapper return view(request, *args, **kwargs) File "/usr/lib/python2.7/site-packages/django/utils/decorators.py", line 30, in bound_func return func.__get__(self, type(self))(*args2, **kwargs2) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 210, in dispatch return super(SignupView, self).dispatch(request, *args, **kwargs) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 79, in dispatch **kwargs) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 182, in dispatch if not self.is_open(): File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 191, in is_open return get_adapter(self.request).is_open_for_signup(self.request) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/adapter.py", line 501, in get_adapter return import_attribute(app_settings.ADAPTER)(request) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/utils.py", line 150, in import_attribute pkg, attr = path.rsplit('.', 1) ValueError: need more than 1 value to unpack --8<---------------cut here---------------end--------------->8--- Do you have any hints, how to avoid such errors please? TIA for any help, -- Peter

3 2

Deactivate list without deleting it?
by Colin Watson 03 Mar '18

03 Mar '18

Hi, I'm experimenting with a port of Launchpad's mailing list infrastructure to Mailman 3. If Barry's reading, he may remember that this is no trivial task, so I'm very definitely not promising that it will be done any time soon. :-) However, for the most part it looks relatively tractable with the aid of the plugin improvements in Mailman 3.2.0; I have the rough outline of a plugin that implements much the same feature set as our current pile of monkey-patches against Mailman 2.1 in a much nicer way. One of the major things I haven't figured out yet is list deactivation and reactivation. In our current 2.1-based code, you can deactivate a list in a reversible way, which basically tars up the list directory so that the list archives can be restored later. This isn't a native operation in 2.1, but it could be done because everything lived on the filesystem. In 3, it's less trivial. We could go to some effort to dump things out of the HyperKitty database and restore it on reactivation, but that seems rather complex and a bit silly. Ideally, I'd like mailing lists to have a "deactivated" state in addition to full deletion. In this state, the list would appear nonexistent for most purposes: incoming email would be rejected, Postorius would deny its existence, etc. There'd need to be corresponding extensions to the IArchiver interface which caused the archiver to put its archives of that list into a corresponding deactivated state, in which it would retain the messages but queries for them would return 404 or similar; these extensions would need to be optional, since while it should be relatively easy to do this in HyperKitty it could be hard or impossible for other archivers, and perhaps this should be a separate operation from deactivating the list itself since people may want to close a list while leaving its archives accessible. Has there been any discussion of this in the past, or any advice as to implementation strategy? Thanks, -- Colin Watson [cjwatson(a)ubuntu.com]

3 7

configure Mysql and postfix on mailman3
by ouerheni.nouha＠gmail.com 20 Feb '18

20 Feb '18

Hello all , I configured mailman3 following this contributer guide http://docs.mailman3.org/en/latest/devsetup.html but i'am still getting problem with the configuration of MySQL and postfix . Is this section is enough for MySQL configurations ? [database] class: mailman.database.mysql.MySQLDatabase url: mysql+pymysql://myuser:mypassword@mymysqlhost/mailman?charset=utf8&use_unicode=1htmlI will appreciated if there are some documents to provide to cotinue the intergration of mailman3 . Is there any tuto for postfix config ? Thanks in advance Ouerheni Nouha

5 4

import21: A string literal cannot contain NUL (0x00) characters.
by Henrik Rasmussen 15 Feb '18

15 Feb '18

Docker-mailman 0.1.1. I am facing errors when using import21 to import list archives. The error message is "A string literal cannot contain NUL (0x00) characters." and the import stops, thus importing only mails up to 2009. The dublicates is mails already imported when retrying. If a mail contains illegal characters I would expect disregarding the particular mail and continue, or ignoring the nul character. bash-4.3# python manage.py hyperkitty_import --verbosity 3 --since "01.01.1970" --list-address example(a)mailman3.ku.dk /opt/mailman-web-data/tmp/example(a)mailman3.ku.dk.mbox Duplicate email with message-id '857A4D84DE6D1D41837DD9284F2729AB08F0C385(a)srv1.example.ku.dk' <857A4D84DE6D1D41837DD9284F2729AB09DA5E45(a)srv1.example.ku.dk> (149) Duplicate email with message-id '857A4D84DE6D1D41837DD9284F2729AB09DA5E45(a)srv1.example.ku.dk' <857A4D84DE6D1D41837DD9284F2729AB09E20126(a)srv1.example.ku.dk> (150) Failed adding message <857A4D84DE6D1D41837DD9284F2729AB09E20126(a)srv1.example.ku.dk>: A string literal cannot contain NUL (0x00) characters. Traceback (most recent call last): File "manage.py", line 10, in <module> execute_from_command_line(sys.argv) File "/usr/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 367, in execute_from_command_line utility.execute() File "/usr/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 359, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/usr/local/lib/python2.7/site-packages/django/core/management/base.py", line 305, in run_from_argv self.execute(*args, **cmd_options) File "/usr/local/lib/python2.7/site-packages/django/core/management/base.py", line 356, in execute output = self.handle(*args, **options) File "/usr/local/lib/python2.7/site-packages/hyperkitty/management/commands/hyperkitty_import.py", line 278, in handle importer.from_mbox(mbfile) File "/usr/local/lib/python2.7/site-packages/hyperkitty/management/commands/hyperkitty_import.py", line 152, in from_mbox add_to_list(self.list_address, message) File "/usr/local/lib/python2.7/site-packages/hyperkitty/lib/incoming.py", line 149, in add_to_list email.save() File "/usr/local/lib/python2.7/site-packages/django/db/models/base.py", line 796, in save force_update=force_update, update_fields=update_fields) File "/usr/local/lib/python2.7/site-packages/django/db/models/base.py", line 824, in save_base updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields) File "/usr/local/lib/python2.7/site-packages/django/db/models/base.py", line 908, in _save_table result = self._do_insert(cls._base_manager, using, fields, update_pk, raw) File "/usr/local/lib/python2.7/site-packages/django/db/models/base.py", line 947, in _do_insert using=using, raw=raw) File "/usr/local/lib/python2.7/site-packages/django/db/models/manager.py", line 85, in manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "/usr/local/lib/python2.7/site-packages/django/db/models/query.py", line 1043, in _insert return query.get_compiler(using=using).execute_sql(return_id) File "/usr/local/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 1054, in execute_sql cursor.execute(sql, params) File "/usr/local/lib/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute return self.cursor.execute(sql, params) ValueError: A string literal cannot contain NUL (0x00) characters. bash-4.3#

6 8

confirm-email: error NoReverseMatc
by Peter Münster 31 Jan '18

31 Jan '18

Hi, When confirming the email address after sign-up, I get this error: --8<---------------cut here---------------start------------->8--- ERROR 2018-01-31 09:31:57,143 28537 django.request Internal Server Error: /accounts/confirm-email/Ng:1egno5:_T5eipR8TTan-zWjLK8EhYuetjQ/ Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/django/core/handlers/base.py", line 132, in get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/usr/lib/python2.7/site-packages/django/views/generic/base.py", line 71, in view return self.dispatch(request, *args, **kwargs) File "/usr/lib/python2.7/site-packages/django/views/generic/base.py", line 89, in dispatch return handler(request, *args, **kwargs) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 283, in post resp = self.login_on_confirm(confirmation) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 332, in login_on_confirm redirect_url=self.get_redirect_url) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/utils.py", line 157, in perform_login get_login_redirect_url(request, redirect_url)) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/utils.py", line 50, in get_login_redirect_url url = url() File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 362, in get_redirect_url self.request) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/adapter.py", line 176, in get_email_confirmation_redirect_url return self.get_login_redirect_url(request) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/adapter.py", line 156, in get_login_redirect_url return resolve_url(url) File "/usr/lib/python2.7/site-packages/django/shortcuts.py", line 205, in resolve_url return urlresolvers.reverse(to, args=args, kwargs=kwargs) File "/usr/lib/python2.7/site-packages/django/core/urlresolvers.py", line 579, in reverse return force_text(iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))) File "/usr/lib/python2.7/site-packages/django/core/urlresolvers.py", line 496, in _reverse_with_prefix (lookup_view_s, args, kwargs, len(patterns), patterns)) NoReverseMatch: Reverse for '' with arguments '()' and keyword arguments '{}' not found. 0 pattern(s) tried: [] ERROR 2018-01-31 09:31:57,143 28537 django.request Internal Server Error: /accounts/confirm-email/Ng:1egno5:_T5eipR8TTan-zWjLK8EhYuetjQ/ Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/django/core/handlers/base.py", line 132, in get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/usr/lib/python2.7/site-packages/django/views/generic/base.py", line 71, in view return self.dispatch(request, *args, **kwargs) File "/usr/lib/python2.7/site-packages/django/views/generic/base.py", line 89, in dispatch return handler(request, *args, **kwargs) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 283, in post resp = self.login_on_confirm(confirmation) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 332, in login_on_confirm redirect_url=self.get_redirect_url) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/utils.py", line 157, in perform_login get_login_redirect_url(request, redirect_url)) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/utils.py", line 50, in get_login_redirect_url url = url() File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/views.py", line 362, in get_redirect_url self.request) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/adapter.py", line 176, in get_email_confirmation_redirect_url return self.get_login_redirect_url(request) File "/usr/lib/python2.7/site-packages/django_allauth-0.34.0-py2.7.egg/allauth/account/adapter.py", line 156, in get_login_redirect_url return resolve_url(url) File "/usr/lib/python2.7/site-packages/django/shortcuts.py", line 205, in resolve_url return urlresolvers.reverse(to, args=args, kwargs=kwargs) File "/usr/lib/python2.7/site-packages/django/core/urlresolvers.py", line 579, in reverse return force_text(iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))) File "/usr/lib/python2.7/site-packages/django/core/urlresolvers.py", line 496, in _reverse_with_prefix (lookup_view_s, args, kwargs, len(patterns), patterns)) NoReverseMatch: Reverse for '' with arguments '()' and keyword arguments '{}' not found. 0 pattern(s) tried: [] --8<---------------cut here---------------end--------------->8--- What could be the reason, and how could I solve this issue please? Since it's perhaps related, here is my urls.py: --8<---------------cut here---------------start------------->8--- from django.conf.urls import include, url from django.contrib import admin from postorius.views.list import list_index urlpatterns = [ url(r'^postorius/', include('postorius.urls')), url(r'^archives/', include('hyperkitty.urls')), url(r'', include('django_mailman3.urls')), url(r'^accounts/', include('allauth.urls')), url(r'^admin/', include(admin.site.urls)), url(r'^$', list_index, name='list_index'), ] --8<---------------cut here---------------end--------------->8--- TIA for any help, -- Peter

2 4

setup of URLs
by Peter Münster 29 Jan '18

29 Jan '18

Hi, I would like to point "https://my-domain.org/" to the list of mailing-lists of this domain. How should I setup my Apache configuration and/or the urlpatterns please? With my actual configuration, the above URL is always rewritten to https://my-domain.org/postorius/lists/ These are my urlpatterns: urlpatterns = [ url(r'^$', RedirectView.as_view( url=reverse_lazy('list_index'), permanent=True)), url(r'^postorius/', include('postorius.urls')), url(r'^archive/', include('hyperkitty.urls')), url(r'', include('django_mailman3.urls')), url(r'^accounts/', include('allauth.urls')), url(r'^admin/', include(admin.site.urls)), ] TIA for any help, -- Peter

4 4

Where is postorius.wsgi?
by Peter Münster 28 Jan '18

28 Jan '18

Hi, I try to install Postorius, but I don't find the file postorius.wsgi. Where should I get it please? This is, what I've done so far: - git clone https://gitlab.com/mailman/postorius.git - cd postorius - python3 setup.py install - cd example_project - virtualenv venv - . venv/bin/activate - pip3 install -r requirements.txt - in venv/lib/python3.6/site-packages/django_mailman3/lib/mailman.py: replace "urllib2" by "urllib.error" - python3 manage.py migrate - python3 manage.py createsuperuser - python3 manage.py compilemessages - python3 manage.py collectstatic Now I try to follow https://postorius.readthedocs.io/en/latest/deployment.html#apache-with-mod-… but I don't find postorius.wsgi ... TIA for any help. Kind regards, -- Peter

5 10

OperationalError: database is locked
by cyp＠trojina.si 25 Jan '18

25 Jan '18

On our installation, we are often gettting Internal Server Error (500). The logs look like this: ERROR 2018-01-09 13:52:57,640 1604 django.request Internal Server Error: /hyperkitty/list/test(a)seznami.cjvt.si/ Traceback (most recent call last): File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/core/handlers/exception.py", line 42, in inner response = get_response(request) File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/core/handlers/base.py", line 249, in _legacy_get_response response = self._get_response(request) File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/core/handlers/base.py", line 187, in _get_response response = self.process_exception_by_middleware(e, request) File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/core/handlers/base.py", line 185, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/opt/mailman/venv2/local/lib/python2.7/site-packages/HyperKitty-1.1.0-py2.7.egg/hyperkitty/lib/view_helpers.py", line 133, in inner mlist = MailingList.objects.get(name=mlist_fqdn) File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/db/models/manager.py", line 85, in manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/db/models/query.py", line 379, in get num = len(clone) File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/db/models/query.py", line 238, in __len__ self._fetch_all() File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/db/models/query.py", line 1087, in _fetch_all self._result_cache = list(self.iterator()) File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/db/models/query.py", line 54, in __iter__ results = compiler.execute_sql() File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/db/models/sql/compiler.py", line 835, in execute_sql cursor.execute(sql, params) File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/db/backends/utils.py", line 64, in execute return self.cursor.execute(sql, params) File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/db/utils.py", line 94, in __exit__ six.reraise(dj_exc_type, dj_exc_value, traceback) File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/db/backends/utils.py", line 64, in execute return self.cursor.execute(sql, params) File "/opt/mailman/venv2/local/lib/python2.7/site-packages/Django-1.10.7-py2.7.egg/django/db/backends/sqlite3/base.py", line 337, in execute return Database.Cursor.execute(self, query, params) OperationalError: database is locked Does this suggest I should switch from sqlite to postgres (https://stackoverflow.com/a/26864360)? I'm happy to do that, but how do I migrate the data between the databases (after installing postgres and creating the database)? I've found this doc (http://mailman.readthedocs.io/en/latest/src/mailman/docs/database.html#data…), but I don't think I understand this and I haven't used alembic: these instructions are just for when you modify the model within the same database, right? Thanks in advance!

4 9