[Mailman-Users] filtering based on message content
mark at msapiro.net
Mon Jul 5 20:16:08 CEST 2010
Russell Clemings wrote:
>I've had a request from the boss to filter incoming messages to some of our
>lists based on the message content. Specifically, the request is to hold all
>messages containing the third of George Carlin's seven words (and presumably
>by extension also the sixth), which a couple of our subscribers seem to find
>suitable for use in any context.
>My first thought, not contradicted by a quick FAQ search, was that there's
>no way Mailman can do this on its own, at least without hacking core,
>because it's not scanning the whole message.
Yes, and no depending on what you mean by "hacking core" (or is that
The relevant FAQ is <http://wiki.list.org/x/l4A9>.
The handler could be as simple as
from Mailman import Errors
from Mailman.Handlers.Hold import hold_for_approval
reason = 'Message has bad words'
rejection = 'Your message has contains forbidden words.'
BADWORDS = re.compile(r'(\W|^)word3(\W|$)|(\W|^)word6(\W|$)', re.I)
def process(mlist, msg, msgdata):
for part in msg.walk():
hold_for_approval(mlist, msg, msgdata, BadWords)
>My second thought was that Spam
>Assassin could be set to flag the offending messages; Mailman is already set
>to hold messages that have the spam flag set. But that seems like kind of a
Perhaps, but it is probably easier to manage.
>Actually, I take that back. My first thought was to just ban the offenders.
>But that's not going to fly.
Mark Sapiro <mark at msapiro.net> The highway is for gamblers,
San Francisco Bay Area, California better use your sense - B. Dylan
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