DigestsΒΆ

The digests rule matches when the posted message has a digest Subject: header or quotes the digest masthead. Generally this is used to prevent replies to a digest with no meaningful Subject: or which quote the entire digest from getting posted to the list. This rule must be enabled by putting hold_digest: yes in the [mailman] section of the configuration.

>>> from mailman.app.lifecycle import create_list
>>> mlist = create_list('_xtest@example.com')
>>> from mailman.config import config
>>> rule = config.rules['digests']
>>> print(rule.name)
digests

If we enable the rule and post a message with a digest like Subject:, the rule will hit.

>>> from mailman.testing.helpers import (
...  configuration, specialized_message_from_string as message_from_string)
>>> msg = message_from_string("""\
... From: anne@example.com
... To: _xtest@example.com
... Subject: Re: test Digest, Vol 1, Issue 1
... Message-ID: <ant>
...
... A message body.
... """)
>>> with configuration('mailman', hold_digest='yes'):
...   rule.check(mlist, msg, {})
True

Similarly, the rule will hit on a message with quotes of the digest masthead regardless of the Subject:.

>>> msg = message_from_string("""\
... From: anne@example.com
... To: _xtest@example.com
... Subject: Message Subject
... Message-ID: <ant>
...
... Send _xtest mailing list submissions to
...         _xtest@example.com
...
... To subscribe or unsubscribe via email, send a message with subject or body
... 'help' to
...         _xtest-request@example.com
...
... You can reach the person managing the list at
...         _xtest-owner@example.com
...
... When replying, please edit your Subject line so it is more specific than
... "Re: Contents of _xtest digest..."
... """)
>>> with configuration('mailman', hold_digest='yes'):
...   rule.check(mlist, msg, {})
True