September 2025 - Mailman-users - lists.mailman3.org

Reason for Shunting
by Brian Carpenter Feb. 23, 2026

Feb. 23, 2026

Is there a way to determine why a message keeps ending up in the shunt queue? -- Brian Carpenter Harmonylists.com Emwd.com

3 5

Internal Server Error: /mailman3/postorius/lists/.../held_messages - humanize: where to put?
by Flo Feb. 16, 2026

Feb. 16, 2026

Hi, I have setup in Debian Trixie mailman3-full and came that far, that I have created a mailing list. I can sent emails to the members. However when I send from an email which is non-member the message is held. If I want to accept this message as list admin, I get: `An error occurred while processing your request.` And I get an email: `Internal Server Error: /mailman3/postorius/.../held_messages TemplateSyntaxError at /postorius/lists/.../held_messages 'humanize' is not a registered tag library. Must be one of: account admin_list admin_modify admin_urls allauth bootstrap_tags cache compress d_gravatar date_helpers debugger_tags decorate gravatar highlight highlighting hk_generic hk_haystack i18n indent_text l10n log markdown membership_helpers more_like_this nav_helpers p_gravatar pagination postorius_helpers rest_framework socialaccount static syntax_color tz widont Request Method: GET Request URL: https://.../mailman3/postorius/lists/.../held_messages Django Version: 4.2.23 Python Executable: /usr/bin/uwsgi-core Python Version: 3.13.5 Python Path: ['.', '', '/usr/lib/python313.zip', '/usr/lib/python3.13', '/usr/lib/python3.13/lib-dynload', '/usr/local/lib/python3.13/dist-packages', '/usr/lib/python3/dist-packages', '/usr/lib/python3/dist-packages/setuptools/_vendor'] . . .` humanize is in the INSTALLED_APPS section in /usr/share/mailman3-web/settings.py. In this file I I configured Django. However it's not in the Python path as written in the error email above. So maybe I have to find a different settings file. Can anyone advise me where I can find the error I have in my configuration? Thanks in advance. Flo

5 7

Phantom Email Address in Nonmember List
by Steve Brown Jan. 31, 2026

Jan. 31, 2026

Have an issue that is more of a puzzle than a problem. No real harm done. So don't spend much time on it if you don't recognize the issue. I am administrator for a small list, radg(a)lists.radg.us, hosted by Mailmanlists.net. They are trying hard to figure it out but so far unsuccessful. Looking at the headers of emails sent from steve(a)stevebrown.us to the list and boomeranged back to me, I see a line “X-MailFrom: bounce+66273f.99dcd9c-radg=lists.radg.us(a)stevebrown.xn--us-02t. I gather that it is designating the return path where a message would be sent if there was a delivery problem. From its position in the header, I suspect it is added as they pass through Mailgun, maybe related to DKIM. I am hoping you might know why that bounce address is recognized by Mailman 3 as a real address for my emails, but not for others, even from my wife’s computer traversing the same path from our home to the Mailman 3 server. The Mailman installation does get and process the post, but also puts the “bounce+,,,” address in its list of nonmembers. Mailmanlists.net hasn’t figured out the behavior. I can provide full header information if that would help. My understanding of how headers work is very limited. Steve Brown

2 9

One-click unsubscribe?
by Jered Floyd Dec. 16, 2025

Dec. 16, 2025

I'm having a lot of problems with GMail delivery due to lack of "one-click unsubscribe" -- however that is quantified, which is not clear. In particular, there is an issue with the fact that Google ignores dots in email addresses. So I have many (MANY!) subscribers who try to use the List-Unsubscribe header target, but because they are subscribed as "idiotsubscriber(a)gmail.com" rather than "idiot.subscriber(a)gmail.com" (which they have since changed their sender to) they get a reject that they are not subscribed. These people are also far too unobservant to read the footer of every message that reads "You are subscribed as idiotsubscriber(a)gmail.com". Is there any way to provide personalized List-Unsubscribe header links, or have Mailman ignore dots in gmail.com addresses... or... anything? I'm finding reported spam percentages in the Google Postmaster Dashboard exceeding 0.1%, which causes massive delivery blocking to GMail-based subscribers. While I would gladly ban everyone who uses gmail, that sadly accounts for about half of the Internet today and would be incredibly unproductive. Thanks, --Jered

8 25

Using clean_users.py
by Odhiambo Washington Dec. 8, 2025

Dec. 8, 2025

I have run clean_users.py with: DELETE_MAILMAN_USER = True DELETE_DJANGO_IF_MAILMAN = True However, when I go to https://mm3-site/mm/lists/listname.mm3-site/members/nonmember/ I still have hundreds of users listed despite the script having run and it showed hundreds of addresses removed. What might be the issue? I expect to NOT find anything listed as nonmembers. -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 In an Internet failure case, the #1 suspect is a constant: DNS. "Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-) [How to ask smart questions: http://www.catb.org/~esr/faqs/smart-questions.html]

3 3

Internal Server Error: /mailman3/accounts/fedora/login/
by Alain D D Williams Nov. 20, 2025

Nov. 20, 2025

Twice today I have received many (50+) emails like the one below. Many at about 1pm, then it stopped now I am getting them again. An Internet search does not bring up anything useful. The domain at the start of 'Request URL' varies as does the name of the list (in this example 'announce(a)leavesden.org') The domain of the list is not necessarily the same as the domain at the start of the URL. I can receive several in a minute. Anyone any idea ? ----- Forwarded message from root(a)bf2024.phcomp.co.uk ----- Date: Mon, 02 Dec 2024 22:19:12 -0000 From: root(a)bf2024.phcomp.co.uk To: root@localhost Subject: [Django] ERROR (EXTERNAL IP): Internal Server Error: /mailman3/accounts/fedora/login/ Internal Server Error: /mailman3/accounts/fedora/login/ TypeError at /accounts/fedora/login/ OpenIDProvider.get_server_settings() missing 1 required positional argument: 'endpoint' Request Method: GET Request URL: https://www.leavesden.org.uk/mailman3/accounts/fedora/login/?next=%2Fmailma… Django Version: 3.2.19 Python Executable: /usr/bin/uwsgi-core Python Version: 3.11.2 Python Path: ['.', '', '/usr/lib/python311.zip', '/usr/lib/python3.11', '/usr/lib/python3.11/lib-dynload', '/usr/local/lib/python3.11/dist-packages', '/usr/lib/python3/dist-packages', '/usr/lib/python3.11/dist-packages'] Server time: Mon, 02 Dec 2024 22:19:07 +0000 Installed Applications: ('hyperkitty', 'postorius', 'django_mailman3', 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'django.contrib.messages', 'django.contrib.staticfiles', 'rest_framework', 'django_gravatar', 'compressor', 'haystack', 'django_extensions', 'django_q', 'allauth', 'allauth.account', 'allauth.socialaccount', 'django_mailman3.lib.auth.fedora') Installed Middleware: ('django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.middleware.locale.LocaleMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware', 'django.middleware.security.SecurityMiddleware', 'django_mailman3.middleware.TimezoneMiddleware', 'postorius.middleware.PostoriusMiddleware') Traceback (most recent call last): File "/usr/lib/python3/dist-packages/django/core/handlers/exception.py", line 47, in inner response = get_response(request) File "/usr/lib/python3/dist-packages/django/core/handlers/base.py", line 181, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/usr/lib/python3/dist-packages/django/views/generic/base.py", line 70, in view return self.dispatch(request, *args, **kwargs) File "/usr/lib/python3/dist-packages/django/views/generic/base.py", line 98, in dispatch return handler(request, *args, **kwargs) File "/usr/lib/python3/dist-packages/django_mailman3/lib/auth/fedora/views.py", line 56, in get return self.post(request, *args, **kwargs) File "/usr/lib/python3/dist-packages/django_mailman3/lib/auth/fedora/views.py", line 67, in post client = _openid_consumer( File "/usr/lib/python3/dist-packages/allauth/socialaccount/providers/openid/views.py", line 27, in _openid_consumer server_settings = provider.get_server_settings(endpoint) Exception Type: TypeError at /accounts/fedora/login/ Exception Value: OpenIDProvider.get_server_settings() missing 1 required positional argument: 'endpoint' Request information: USER: AnonymousUser GET: next = '/mailman3/hyperkitty/list/announce(a)leavesden.org.uk/2020/12/' process = 'login' POST: No POST data FILES: No FILES data COOKIES: No cookie data META: CONTEXT_DOCUMENT_ROOT = '/var/www/leavesden/html' CONTEXT_PREFIX = '' DOCUMENT_ROOT = '/var/www/leavesden/html' GATEWAY_INTERFACE = 'CGI/1.1' HTTPS = 'on' HTTP_ACCEPT = 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' HTTP_ACCEPT_ENCODING = 'gzip' HTTP_ACCEPT_LANGUAGE = 'en-us,en-gb,en;q=0.7,*;q=0.3' HTTP_CONNECTION = 'Keep-Alive' HTTP_HOST = 'www.leavesden.org.uk' HTTP_USER_AGENT = 'serpstatbot/2.1 (advanced backlink tracking bot; https://serpstatbot.com/; abuse(a)serpstatbot.com)' PATH = '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin' PATH_INFO = '/accounts/fedora/login/' QUERY_STRING = 'next=%2Fmailman3%2Fhyperkitty%2Flist%2Fannounce%40leavesden.org.uk%2F2020%2F12%2F&process=login' REMOTE_ADDR = '144.76.69.39' REMOTE_PORT = '33902' REQUEST_METHOD = 'GET' REQUEST_SCHEME = 'https' REQUEST_URI = '/mailman3/accounts/fedora/login/?next=%2Fmailman3%2Fhyperkitty%2Flist%2Fannounce%40leavesden.org.uk%2F2020%2F12%2F&process=login' SCRIPT_FILENAME = 'proxy:uwsgi://localhost//accounts/fedora/login/' SCRIPT_NAME = '/mailman3' SCRIPT_URI = 'https://www.leavesden.org.uk/mailman3/accounts/fedora/login/' SCRIPT_URL = '/mailman3/accounts/fedora/login/' SERVER_ADDR = '85.119.82.114' SERVER_ADMIN = 'addw(a)phcomp.co.uk' SERVER_NAME = 'www.leavesden.org.uk' SERVER_PORT = '443' SERVER_PROTOCOL = 'HTTP/1.1' SERVER_SIGNATURE = '********************' SERVER_SOFTWARE = 'Apache/2.4.62 (Debian)' SSL_TLS_SNI = 'www.leavesden.org.uk' uwsgi.core = 1 uwsgi.node = b'bf2024.phcomp.co.uk' uwsgi.version = b'2.0.21-debian' wsgi.errors = <_io.TextIOWrapper name=2 mode='w' encoding='UTF-8'> wsgi.file_wrapper = <built-in function uwsgi_sendfile> wsgi.input = <uwsgi._Input object at 0x7f42defc8b50> wsgi.multiprocess = False wsgi.multithread = True wsgi.run_once = False wsgi.url_scheme = 'https' wsgi.version = '(1, 0)' Settings: Using settings module settings ABSOLUTE_URL_OVERRIDES = {} ACCOUNT_AUTHENTICATION_METHOD = 'username_email' ACCOUNT_DEFAULT_HTTP_PROTOCOL = 'https' ACCOUNT_EMAIL_REQUIRED = True ACCOUNT_EMAIL_VERIFICATION = 'mandatory' ACCOUNT_UNIQUE_EMAIL = True ADMINS = "(('Mailman Suite Admin', 'root@localhost'),)" ALLOWED_HOSTS = ['*'] APPEND_SLASH = True AUTHENTICATION_BACKENDS = "('django.contrib.auth.backends.ModelBackend', 'allauth.account.auth_backends.AuthenticationBackend')" AUTH_PASSWORD_VALIDATORS = '********************' AUTH_USER_MODEL = 'auth.User' BASE_DIR = '/usr/share/mailman3-web' CACHES = {'default': {'BACKEND': 'django.core.cache.backends.locmem.LocMemCache'}} CACHE_MIDDLEWARE_ALIAS = 'default' CACHE_MIDDLEWARE_KEY_PREFIX = '********************' CACHE_MIDDLEWARE_SECONDS = 600 COMPRESSORS = {'css': 'compressor.css.CssCompressor', 'js': 'compressor.js.JsCompressor'} COMPRESS_CACHEABLE_PRECOMPILERS = '()' COMPRESS_CACHE_BACKEND = 'default' COMPRESS_CACHE_KEY_FUNCTION = '********************' COMPRESS_CLEAN_CSS_ARGUMENTS = '' COMPRESS_CLEAN_CSS_BINARY = 'cleancss' COMPRESS_CLOSURE_COMPILER_ARGUMENTS = '' COMPRESS_CLOSURE_COMPILER_BINARY = 'java -jar compiler.jar' COMPRESS_CSS_HASHING_METHOD = 'mtime' COMPRESS_DATA_URI_MAX_SIZE = 1024 COMPRESS_DEBUG_TOGGLE = None COMPRESS_ENABLED = True COMPRESS_FILTERS = {'css': ['compressor.filters.css_default.CssAbsoluteFilter', 'compressor.filters.cssmin.rCSSMinFilter'], 'js': ['compressor.filters.jsmin.rJSMinFilter']} COMPRESS_JINJA2_GET_ENVIRONMENT = <function CompressorConf.JINJA2_GET_ENVIRONMENT at 0x7f42e6122700> COMPRESS_MINT_DELAY = 30 COMPRESS_MTIME_DELAY = 10 COMPRESS_OFFLINE = True COMPRESS_OFFLINE_CONTEXT = {'STATIC_URL': '/mailman3/static/'} COMPRESS_OFFLINE_MANIFEST = 'manifest.json' COMPRESS_OFFLINE_TIMEOUT = 31536000 COMPRESS_OUTPUT_DIR = 'CACHE' COMPRESS_PARSER = 'compressor.parser.AutoSelectParser' COMPRESS_PRECOMPILERS = '()' COMPRESS_REBUILD_TIMEOUT = 2592000 COMPRESS_ROOT = '/var/lib/mailman3/web/static' COMPRESS_STORAGE = 'compressor.storage.CompressorFileStorage' COMPRESS_TEMPLATE_FILTER_CONTEXT = {'STATIC_URL': '/mailman3/static/'} COMPRESS_URL = '/mailman3/static/' COMPRESS_URL_PLACEHOLDER = '/__compressor_url_placeholder__/' COMPRESS_VERBOSE = False COMPRESS_YUGLIFY_BINARY = 'yuglify' COMPRESS_YUGLIFY_CSS_ARGUMENTS = '--terminal' COMPRESS_YUGLIFY_JS_ARGUMENTS = '--terminal' COMPRESS_YUI_BINARY = 'java -jar yuicompressor.jar' COMPRESS_YUI_CSS_ARGUMENTS = '' COMPRESS_YUI_JS_ARGUMENTS = '' CSRF_COOKIE_AGE = 31449600 CSRF_COOKIE_DOMAIN = None CSRF_COOKIE_HTTPONLY = False CSRF_COOKIE_NAME = 'csrftoken' CSRF_COOKIE_PATH = '/' CSRF_COOKIE_SAMESITE = 'Lax' CSRF_COOKIE_SECURE = False CSRF_FAILURE_VIEW = 'django.views.csrf.csrf_failure' CSRF_HEADER_NAME = 'HTTP_X_CSRFTOKEN' CSRF_TRUSTED_ORIGINS = [] CSRF_USE_SESSIONS = False DATABASES = {'default': {'ENGINE': 'django.db.backends.mysql', 'NAME': 'mailman3web', 'USER': 'mailman3web', 'PASSWORD': '********************', 'HOST': 'localhost', 'PORT': '', 'OPTIONS': {'init_command': "SET sql_mode='STRICT_TRANS_TABLES'", 'charset': 'utf8mb4'}, 'ATOMIC_REQUESTS': False, 'AUTOCOMMIT': True, 'CONN_MAX_AGE': 0, 'TIME_ZONE': None, 'TEST': {'CHARSET': None, 'COLLATION': None, 'MIGRATE': True, 'MIRROR': None, 'NAME': None}}} DATABASE_ROUTERS = [] DATA_UPLOAD_MAX_MEMORY_SIZE = 2621440 DATA_UPLOAD_MAX_NUMBER_FIELDS = 1000 DATA_UPLOAD_MAX_NUMBER_FILES = 100 DATETIME_FORMAT = 'N j, Y, P' DATETIME_INPUT_FORMATS = ['%Y-%m-%d %H:%M:%S', '%Y-%m-%d %H:%M:%S.%f', '%Y-%m-%d %H:%M', '%m/%d/%Y %H:%M:%S', '%m/%d/%Y %H:%M:%S.%f', '%m/%d/%Y %H:%M', '%m/%d/%y %H:%M:%S', '%m/%d/%y %H:%M:%S.%f', '%m/%d/%y %H:%M'] DATE_FORMAT = 'N j, Y' DATE_INPUT_FORMATS = ['%Y-%m-%d', '%m/%d/%Y', '%m/%d/%y', '%b %d %Y', '%b %d, %Y', '%d %b %Y', '%d %b, %Y', '%B %d %Y', '%B %d, %Y', '%d %B %Y', '%d %B, %Y'] DEBUG = False DEBUG_PROPAGATE_EXCEPTIONS = False DECIMAL_SEPARATOR = '.' DEFAULT_AUTO_FIELD = 'django.db.models.AutoField' DEFAULT_CHARSET = 'utf-8' DEFAULT_EXCEPTION_REPORTER = 'django.views.debug.ExceptionReporter' DEFAULT_EXCEPTION_REPORTER_FILTER = 'django.views.debug.SafeExceptionReporterFilter' DEFAULT_FILE_STORAGE = 'django.core.files.storage.FileSystemStorage' DEFAULT_FROM_EMAIL = 'mailman3(a)bf2024.phcomp.co.uk' DEFAULT_HASHING_ALGORITHM = 'sha256' DEFAULT_INDEX_TABLESPACE = '' DEFAULT_TABLESPACE = '' DISALLOWED_USER_AGENTS = [] EMAILNAME = 'bf2024.phcomp.co.uk' EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend' EMAIL_HOST = 'localhost' EMAIL_HOST_PASSWORD = '********************' EMAIL_HOST_USER = '' EMAIL_PORT = 25 EMAIL_SSL_CERTFILE = None EMAIL_SSL_KEYFILE = '********************' EMAIL_SUBJECT_PREFIX = '[Django] ' EMAIL_TIMEOUT = None EMAIL_USE_LOCALTIME = False EMAIL_USE_SSL = False EMAIL_USE_TLS = False FILE_UPLOAD_DIRECTORY_PERMISSIONS = None FILE_UPLOAD_HANDLERS = ['django.core.files.uploadhandler.MemoryFileUploadHandler', 'django.core.files.uploadhandler.TemporaryFileUploadHandler'] FILE_UPLOAD_MAX_MEMORY_SIZE = 2621440 FILE_UPLOAD_PERMISSIONS = 420 FILE_UPLOAD_TEMP_DIR = None FILTER_VHOST = False FIRST_DAY_OF_WEEK = 0 FIXTURE_DIRS = [] FORCE_SCRIPT_NAME = None FORMAT_MODULE_PATH = None FORM_RENDERER = 'django.forms.renderers.DjangoTemplates' HAYSTACK_CONNECTIONS = {'default': {'ENGINE': 'haystack.backends.whoosh_backend.WhooshEngine', 'PATH': '/var/lib/mailman3/web/fulltext_index'}} HOSTNAME = 'localhost' IGNORABLE_404_URLS = [] INSTALLED_APPS = "('hyperkitty', 'postorius', 'django_mailman3', 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'django.contrib.messages', 'django.contrib.staticfiles', 'rest_framework', 'django_gravatar', 'compressor', 'haystack', 'django_extensions', 'django_q', 'allauth', 'allauth.account', 'allauth.socialaccount', 'django_mailman3.lib.auth.fedora')" INTERNAL_IPS = [] LANGUAGES = [('af', 'Afrikaans'), ('ar', 'Arabic'), ('ar-dz', 'Algerian Arabic'), ('ast', 'Asturian'), ('az', 'Azerbaijani'), ('bg', 'Bulgarian'), ('be', 'Belarusian'), ('bn', 'Bengali'), ('br', 'Breton'), ('bs', 'Bosnian'), ('ca', 'Catalan'), ('cs', 'Czech'), ('cy', 'Welsh'), ('da', 'Danish'), ('de', 'German'), ('dsb', 'Lower Sorbian'), ('el', 'Greek'), ('en', 'English'), ('en-au', 'Australian English'), ('en-gb', 'British English'), ('eo', 'Esperanto'), ('es', 'Spanish'), ('es-ar', 'Argentinian Spanish'), ('es-co', 'Colombian Spanish'), ('es-mx', 'Mexican Spanish'), ('es-ni', 'Nicaraguan Spanish'), ('es-ve', 'Venezuelan Spanish'), ('et', 'Estonian'), ('eu', 'Basque'), ('fa', 'Persian'), ('fi', 'Finnish'), ('fr', 'French'), ('fy', 'Frisian'), ('ga', 'Irish'), ('gd', 'Scottish Gaelic'), ('gl', 'Galician'), ('he', 'Hebrew'), ('hi', 'Hindi'), ('hr', 'Croatian'), ('hsb', 'Upper Sorbian'), ('hu', 'Hungarian'), ('hy', 'Armenian'), ('ia', 'Interlingua'), ('id', 'Indonesian'), ('ig', 'Igbo'), ('io', 'Ido'), ('is', 'Icelandic'), ('it', 'Italian'), ('ja', 'Japanese'), ('ka', 'Georgian'), ('kab', 'Kabyle'), ('kk', 'Kazakh'), ('km', 'Khmer'), ('kn', 'Kannada'), ('ko', 'Korean'), ('ky', 'Kyrgyz'), ('lb', 'Luxembourgish'), ('lt', 'Lithuanian'), ('lv', 'Latvian'), ('mk', 'Macedonian'), ('ml', 'Malayalam'), ('mn', 'Mongolian'), ('mr', 'Marathi'), ('my', 'Burmese'), ('nb', 'Norwegian Bokmål'), ('ne', 'Nepali'), ('nl', 'Dutch'), ('nn', 'Norwegian Nynorsk'), ('os', 'Ossetic'), ('pa', 'Punjabi'), ('pl', 'Polish'), ('pt', 'Portuguese'), ('pt-br', 'Brazilian Portuguese'), ('ro', 'Romanian'), ('ru', 'Russian'), ('sk', 'Slovak'), ('sl', 'Slovenian'), ('sq', 'Albanian'), ('sr', 'Serbian'), ('sr-latn', 'Serbian Latin'), ('sv', 'Swedish'), ('sw', 'Swahili'), ('ta', 'Tamil'), ('te', 'Telugu'), ('tg', 'Tajik'), ('th', 'Thai'), ('tk', 'Turkmen'), ('tr', 'Turkish'), ('tt', 'Tatar'), ('udm', 'Udmurt'), ('uk', 'Ukrainian'), ('ur', 'Urdu'), ('uz', 'Uzbek'), ('vi', 'Vietnamese'), ('zh-hans', 'Simplified Chinese'), ('zh-hant', 'Traditional Chinese')] LANGUAGES_BIDI = ['he', 'ar', 'ar-dz', 'fa', 'ur'] LANGUAGE_CODE = 'en-gb' LANGUAGE_COOKIE_AGE = None LANGUAGE_COOKIE_DOMAIN = None LANGUAGE_COOKIE_HTTPONLY = False LANGUAGE_COOKIE_NAME = 'django_language' LANGUAGE_COOKIE_PATH = '/' LANGUAGE_COOKIE_SAMESITE = None LANGUAGE_COOKIE_SECURE = False LOCALE_PATHS = [] LOGGING = {'version': 1, 'disable_existing_loggers': False, 'filters': {'require_debug_false': {'()': 'django.utils.log.RequireDebugFalse'}}, 'handlers': {'mail_admins': {'level': 'ERROR', 'filters': ['require_debug_false'], 'class': 'django.utils.log.AdminEmailHandler'}, 'file': {'level': 'INFO', 'class': 'logging.handlers.RotatingFileHandler', 'filename': '/var/log/mailman3/web/mailman-web.log', 'formatter': 'verbose'}, 'console': {'class': 'logging.StreamHandler', 'formatter': 'simple'}}, 'loggers': {'django.request': {'handlers': ['mail_admins', 'file'], 'level': 'INFO', 'propagate': True}, 'django': {'handlers': ['file'], 'level': 'INFO', 'propagate': True}, 'hyperkitty': {'handlers': ['file'], 'level': 'INFO', 'propagate': True}, 'postorius': {'handlers': ['file'], 'level': 'INFO', 'propagate': True}}, 'formatters': {'verbose': {'format': '%(levelname)s %(asctime)s %(process)d %(name)s %(message)s'}, 'simple': {'format': '%(levelname)s %(message)s'}}} LOGGING_CONFIG = 'logging.config.dictConfig' LOGIN_REDIRECT_URL = 'list_index' LOGIN_URL = 'account_login' LOGOUT_REDIRECT_URL = None LOGOUT_URL = 'account_logout' MAILMAN_ARCHIVER_FROM = "('127.0.0.1', '::1')" MAILMAN_ARCHIVER_KEY = '********************' MAILMAN_REST_API_PASS = '********************' MAILMAN_REST_API_URL = '********************' MAILMAN_REST_API_USER = '********************' MANAGERS = [] MEDIA_ROOT = '' MEDIA_URL = '/mailman3/' MESSAGE_STORAGE = 'django.contrib.messages.storage.fallback.FallbackStorage' MESSAGE_TAGS = {40: 'danger'} MIDDLEWARE = "('django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.middleware.locale.LocaleMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware', 'django.middleware.security.SecurityMiddleware', 'django_mailman3.middleware.TimezoneMiddleware', 'postorius.middleware.PostoriusMiddleware')" MIGRATION_MODULES = {} MONTH_DAY_FORMAT = 'F j' NUMBER_GROUPING = 0 PASSWORD_HASHERS = '********************' PASSWORD_RESET_TIMEOUT = '********************' PASSWORD_RESET_TIMEOUT_DAYS = '********************' POSTORIUS_TEMPLATE_BASE_URL = 'http://localhost/mailman3/' PREPEND_WWW = False Q_CLUSTER = {'timeout': 300, 'retry': 400, 'save_limit': 100, 'orm': 'default', 'poll': 5} ROOT_URLCONF = 'urls' SECRET_KEY = '********************' SECURE_BROWSER_XSS_FILTER = False SECURE_CONTENT_TYPE_NOSNIFF = True SECURE_HSTS_INCLUDE_SUBDOMAINS = False SECURE_HSTS_PRELOAD = False SECURE_HSTS_SECONDS = 0 SECURE_PROXY_SSL_HEADER = None SECURE_REDIRECT_EXEMPT = [] SECURE_REFERRER_POLICY = 'same-origin' SECURE_SSL_HOST = None SECURE_SSL_REDIRECT = False SERVER_EMAIL = 'root(a)bf2024.phcomp.co.uk' SESSION_CACHE_ALIAS = 'default' SESSION_COOKIE_AGE = 1209600 SESSION_COOKIE_DOMAIN = None SESSION_COOKIE_HTTPONLY = True SESSION_COOKIE_NAME = 'sessionid' SESSION_COOKIE_PATH = '/' SESSION_COOKIE_SAMESITE = 'Lax' SESSION_COOKIE_SECURE = False SESSION_ENGINE = 'django.contrib.sessions.backends.db' SESSION_EXPIRE_AT_BROWSER_CLOSE = False SESSION_FILE_PATH = None SESSION_SAVE_EVERY_REQUEST = False SESSION_SERIALIZER = 'django.contrib.sessions.serializers.PickleSerializer' SETTINGS_MODULE = 'settings' SHORT_DATETIME_FORMAT = 'm/d/Y P' SHORT_DATE_FORMAT = 'm/d/Y' SIGNING_BACKEND = 'django.core.signing.TimestampSigner' SILENCED_SYSTEM_CHECKS = [] SITE_ID = 1 SOCIALACCOUNT_PROVIDERS = {} STATICFILES_DIRS = '()' STATICFILES_FINDERS = "('django.contrib.staticfiles.finders.FileSystemFinder', 'django.contrib.staticfiles.finders.AppDirectoriesFinder', 'compressor.finders.CompressorFinder')" STATICFILES_STORAGE = 'django.contrib.staticfiles.storage.StaticFilesStorage' STATIC_ROOT = '/var/lib/mailman3/web/static' STATIC_URL = '/mailman3/static/' TEMPLATES = [{'BACKEND': 'django.template.backends.django.DjangoTemplates', 'DIRS': [], 'APP_DIRS': True, 'OPTIONS': {'context_processors': ['django.template.context_processors.debug', 'django.template.context_processors.i18n', 'django.template.context_processors.media', 'django.template.context_processors.static', 'django.template.context_processors.tz', 'django.template.context_processors.csrf', 'django.template.context_processors.request', 'django.contrib.auth.context_processors.auth', 'django.contrib.messages.context_processors.messages', 'django_mailman3.context_processors.common', 'hyperkitty.context_processors.common', 'postorius.context_processors.postorius']}}] TEST_NON_SERIALIZED_APPS = [] TEST_RUNNER = 'django.test.runner.DiscoverRunner' THOUSAND_SEPARATOR = ',' TIME_FORMAT = 'P' TIME_INPUT_FORMATS = ['%H:%M:%S', '%H:%M:%S.%f', '%H:%M'] TIME_ZONE = 'UTC' USE_I18N = True USE_L10N = True USE_THOUSAND_SEPARATOR = False USE_TZ = True USE_X_FORWARDED_HOST = True USE_X_FORWARDED_PORT = False WSGI_APPLICATION = 'wsgi.application' X_FRAME_OPTIONS = 'DENY' YEAR_MONTH_FORMAT = 'F Y' ----- End forwarded message ----- -- Alain Williams Linux/GNU Consultant - Mail systems, Web sites, Networking, Programmer, IT Lecturer. +44 (0) 787 668 0256 https://www.phcomp.co.uk/ Parliament Hill Computers. Registration Information: https://www.phcomp.co.uk/Contact.html #include <std_disclaimer.h>

4 5

Block members from sending cc's and bcc's
by Cathryn McGuire Nov. 15, 2025

Nov. 15, 2025

Hi everyone, Using Mailman 3 with Affinity web interface and we want to stop our members from sending to cc: or bcc: We've found the Header Filter and cc and bcc appear in it. Tried to configure it to "hold for moderation," but it hasn't worked. Partly because we don't understand what to put in the Pattern input box. I put in cc: because it requires something. Can anyone advise? Cheers, Cathryn

3 26

Xapian alternatives
by Andrew Bernard Nov. 11, 2025

Nov. 11, 2025

Are there alternative search engines to Xapian that can be used for Mailman 3? I have come to understand that Xapian development stalled in the v2.0 attempt.

5 8

default processing
by Sam Darwin Oct. 13, 2025

Oct. 13, 2025

Notice the repeated use of the word "default" (which is a great word, by the way). This creates confusion: Default action to take when this member posts to the list. List default -- follow the list's default member action. Default Processing -- run additional checks and accept the message. Due to backwards compatibility it may be difficult to change. But if it could be modified, how about: Action to take when this member posts to the list. List default -- follow the list's default member action. Standard Processing -- run additional checks and accept the message. In other words, in the context of message acceptance, the word "default" should have a certain selected meaning. Then make extra effort to choose other words for other actions, as proposed here, "Standard Processing", or something similar.

3 10

Sendgrid experiences
by Andrew Hodgson Oct. 6, 2025

Oct. 6, 2025

Hi. I am temporarily using Sendgrid now on my Mailman instance. Initial observations have been positive. A list with 100 users is racking up email delivers though, I am on the basic paid account which gives me 50k emails per month. I was hoping to use a cheaper provider and pay overage costs per email on the assumption that I'm seeing a spike in traffic today because people have started getting the messages again. Sendgrid is maintaining the Message-Id header which is good for archiving. It is re-writing the Return-Path header though which means that bounce handling in Mailman won't work, but I think all the services do this in some way so I am happy to live with that for the moment. Hope this helps. Andrew.

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