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mailman-developers@python.org

July 2022

2 participants
2 discussions

before next release: disable backscatter in default installation
by Jo Rhett Nov. 7, 2022

Nov. 7, 2022

Hi. There's a fairly simple problem here that needs to be addressed. And it's mostly a documentation/install problem. I'm hoping we can get this resolved before the next release. PROBLEM: Mailman comes out of the box ready to backscatter spam people. Yes, it's easy enough to fix. But because it comes stock this way, and is documented to install this way, most people install it to do this. Those of us who work in abuse departments are tired of hearing "well that's how Mailman works". We also object to having to teach people how to fix their mailman installations because it's not documented in the current manual. This is *exactly* like Sendmail 14 years ago. We didn't accept it then, and Sendmail fixed the problem. RESOLUTION: Mailman default installation should not backscatter in a default configuration. 1. Don't create backscatter aliases for subscribe/unsubscribe/etc by default. Nearly everyone uses web based signup. 2. Discard or hold messages from non-subscribers by default. I would think that it would be perfectly reasonable to have documentation on how to enable the 1980s-style -request / -subscribe etc aliases. However this documentation should have a note that this is against the AUP of nearly every network provider, and enabling it will likely cause them to get listed in various blacklists as a backscatter source. FYI: I know that this goes against the instincts of many old-time mailing list advocates here. But after dealing with a 10k/hour backscatter DoS my tolerance for this problem is understandably limited. Yes, it was a sweet day back in the 1980s. I was running a mailing list server and several UUCP gateways at the time, so I remember them well. But those days are past, and we need to deal with the reality of today. -- Jo Rhett Net Consonance : consonant endings by net philanthropy, open source and other randomness

21 168

Troubles with Django 3.0.14
by Koichi MATSUMOTO July 26, 2022

July 26, 2022

Hi, I tried to install Mailman & HyperKitty according to the installation instructions and do `mailman-web migrate`, but failed. ```log Traceback (most recent call last): File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/utils.py", line 66, in __getitem__ return self._engines[alias] KeyError: 'django' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/backends/django.py", line 121, in get_package_libraries module = import_module(entry[1]) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/importlib/__init__.py", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 1050, in _gcd_import File "<frozen importlib._bootstrap>", line 1027, in _find_and_load File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 688, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 883, in exec_module File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/hyperkitty/templatetags/decorate.py", line 4, in <module> from hyperkitty.lib.renderer import markdown_renderer, text_renderer File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/hyperkitty/lib/renderer.py", line 6, in <module> from mistune.plugins.extra import plugin_url ModuleNotFoundError: No module named 'mistune.plugins.extra' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/srv/mailman/.pyenv/versions/3.10.5/bin/mailman-web", line 8, in <module> sys.exit(main()) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/mailman_web/manage.py", line 30, in main execute_from_command_line(sys.argv) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line utility.execute() File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/__init__.py", line 395, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/base.py", line 328, in run_from_argv self.execute(*args, **cmd_options) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/base.py", line 366, in execute self.check() File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/base.py", line 392, in check all_issues = self._run_checks( File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/commands/migrate.py", line 64, in _run_checks issues.extend(super()._run_checks(**kwargs)) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/base.py", line 382, in _run_checks return checks.run_checks(**kwargs) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/checks/registry.py", line 72, in run_checks new_errors = check(app_configs=app_configs) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/contrib/admin/checks.py", line 76, in check_dependencies for engine in engines.all(): File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/utils.py", line 90, in all return [self[alias] for alias in self] File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/utils.py", line 90, in <listcomp> return [self[alias] for alias in self] File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/utils.py", line 81, in __getitem__ engine = engine_cls(params) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/backends/django.py", line 25, in __init__ options['libraries'] = self.get_templatetag_libraries(libraries) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/backends/django.py", line 43, in get_templatetag_libraries libraries = get_installed_libraries() File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/backends/django.py", line 108, in get_installed_libraries for name in get_package_libraries(pkg): File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/backends/django.py", line 123, in get_package_libraries raise InvalidTemplateLibrary( django.template.library.InvalidTemplateLibrary: Invalid template library specified. ImportError raised when trying to load 'hyperkitty.templatetags.decorate': No module named ‘mistune.plugins.extra' ``` Ok, I installed mistune 2.0.4 and retried `mailman-web migrate` but failied yet. ```log Traceback (most recent call last): File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/utils.py", line 66, in __getitem__ return self._engines[alias] KeyError: 'django' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/backends/django.py", line 121, in get_package_libraries module = import_module(entry[1]) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/importlib/__init__.py", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 1050, in _gcd_import File "<frozen importlib._bootstrap>", line 1027, in _find_and_load File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 688, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 883, in exec_module File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/hyperkitty/templatetags/decorate.py", line 4, in <module> from hyperkitty.lib.renderer import markdown_renderer, text_renderer File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/hyperkitty/lib/renderer.py", line 7, in <module> from mistune.scanner import escape_html, escape_url ImportError: cannot import name 'escape_html' from 'mistune.scanner' (/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/mistune/scanner.py) During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/srv/mailman/.pyenv/versions/3.10.5/bin/mailman-web", line 8, in <module> sys.exit(main()) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/mailman_web/manage.py", line 30, in main execute_from_command_line(sys.argv) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line utility.execute() File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/__init__.py", line 395, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/base.py", line 328, in run_from_argv self.execute(*args, **cmd_options) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/base.py", line 366, in execute self.check() File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/base.py", line 392, in check all_issues = self._run_checks( File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/commands/migrate.py", line 64, in _run_checks issues.extend(super()._run_checks(**kwargs)) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/management/base.py", line 382, in _run_checks return checks.run_checks(**kwargs) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/core/checks/registry.py", line 72, in run_checks new_errors = check(app_configs=app_configs) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/contrib/admin/checks.py", line 76, in check_dependencies for engine in engines.all(): File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/utils.py", line 90, in all return [self[alias] for alias in self] File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/utils.py", line 90, in <listcomp> return [self[alias] for alias in self] File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/utils.py", line 81, in __getitem__ engine = engine_cls(params) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/backends/django.py", line 25, in __init__ options['libraries'] = self.get_templatetag_libraries(libraries) File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/backends/django.py", line 43, in get_templatetag_libraries libraries = get_installed_libraries() File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/backends/django.py", line 108, in get_installed_libraries for name in get_package_libraries(pkg): File "/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/django/template/backends/django.py", line 123, in get_package_libraries raise InvalidTemplateLibrary( django.template.library.InvalidTemplateLibrary: Invalid template library specified. ImportError raised when trying to load 'hyperkitty.templatetags.decorate': cannot import name 'escape_html' from 'mistune.scanner' (/srv/mailman/.pyenv/versions/3.10.5/lib/python3.10/site-packages/mistune/scanner.py) ``` And then, I modified hyperkitty/lib/renderer.py as below: ``` --- renderer.py.orig 2022-07-26 04:41:01.244307778 +0900 +++ renderer.py 2022-07-26 04:35:14.096672198 +0900 @@ -4,7 +4,7 @@ import mistune from mistune.plugins.extra import plugin_url -from mistune.scanner import escape_html, escape_url +from mistune.util import escape_html, escape_url class MyRenderer(mistune.HTMLRenderer): ``` Then retried, I migrated databases successfully. Is this a bug?

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