[Mailman-Users] privacy options, SPAM, regex

Mark Sapiro mark at msapiro.net
Thu Nov 27 00:21:34 CET 2008

Helmut Schneider wrote:

> Mark Sapiro wrote:

>> Helmut Schneider wrote:
>>> I have lots of problems with out-of-office replies. I tried to set up
>>> a few  filter rules using 2.1.10. Unfortuantely they don't catch them.
>>> Are the  expressions case sensitiv? Are the expressions basic or
>>> extended? 
>>> What I tried yet:
>>> ^subject:.*Accepted.*
>>> ^subject:.*Declined.*
>>> ^subject:.*is out of office.*
>> There are two different filters at # Privacy options... ->Spam filters,
>> and they work differently.
>> The more flexible of the two is header_filter_rules. For
>> header_filter_rules the regexps are matched against a multi-line
>> string containing all the unfolded headers in the message, both
>> message headers and sub-part headers. The regexp is a python regexp
>> <http://docs.python.org/library/re.html#regular-expression-syntax> and
>> the headers are searched
>> <http://docs.python.org/library/re.html#re.search> for a match of the
>> regexp in MULTILINE and IGNORECASE mode. This means the '^' matches
>> the beginning of the string or the null character immediately
>> following a newline and the match is case insensitive. Thus your above
>> expressions look good.
>That's weird. Messages still pass with e.g.
>Subject: [Somelist] Declined:  Invitation to workshop on 13rd Dec. 2008
>in the Header. Do I need to escape the colon? Or something else?

I just tested a rule with the three regexps

^subject:.*is out of office.*

copied from your post and Action set to Reject, and a message with

Subject: [Somelist] Declined:  Invitation to workshop on 13rd Dec. 2008

was rejected for matching the rule. Perhaps you didn't set the rule
action. Note that Action = Defer does not mean defer the post; it
means defer the rule - i.e. don't enforce it.

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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