[Mailman-Users] Stripping sig files

Mark Sapiro mark at msapiro.net
Fri Dec 17 06:23:23 CET 2010

bruce clark wrote
>My problem: the users on my lists are waging a low-level war with  
>their sig files. I do not allow commercial posting so they have  
>started creating sig files with their commercial messages inside them.
>This is creating a lot of 'heat' and wasting a huge amount of my time  
>as I try and deal with users. I've gone into content filtering and  
>listed the mime types of images to be filtered, but there is still  
>text in the sig files that I would like to delete before the mail  
>reaches the list.
>Is there a way to strip entire sig files?

If you have the ability to modify the Mailman code, you could create a
custom handler to do this. See the FAQ at

>My FAQ reading mentions something about procmail (which I don't really  
>understand). Should I be teaching myself something about procmail, or  
>should I be putting my energy somewhere else? I guess I would somehow  
>need to intercept the mail between the sender and the receiver and  
>somehow 'fix' it?

If I were you, I would moderate the offending users and simply reject
their posts until they learn.

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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