[Mailman-Users] Filter to discard facebook invitations

Mark Sapiro mark at msapiro.net
Sun Apr 4 17:34:16 CEST 2010

John List wrote:

>Why doesn't the following discard_these_nonmembers filter work for 
>facebook invitations:

Because while it is a valid Python regexp
<http://docs.python.org/library/re.html>, it doesn't say what you mean.

The correct way to say what I think you mean by that is


I.e. [^@] matches anything which is not '@'; [!@] matches just '!' or

However, I would use


to match any address in the facebookmail.com domain or a sub-domain or


to match addresses in only the facebookmail.com domain.

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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