[Mailman-Users] Additional questions about ban_list

Aditya Jain aj at adityaj.in
Tue Oct 6 19:43:47 CEST 2015

Hi Chris,

On Tuesday 06 October 2015 08:37 PM, Chris Nulk wrote:
> Hello all,
> I have been loosely following the discussion regarding regex in the
> ban_list attribute.  I now find myself being asked to create a list
> which will most likely use the ban_list attribute.  So, I have a few
> questions.
> 1. The ban_list attribute is to help prevent unwanted people from
> subscribing to a list, however, I want to restrict who can subscribe
> to the list and ban anyone else.  I have the regex for who I want to
> allow to subscribe but there isn't an allow_list attribute.  Is there
> an easy way of allowing a regex to control who is able to subscribe? 
> Or, is there a way to easily invert the regex logic and use it in
> ban_list?  As an example (not the real regex), say I want to only
> allow @gmail.com to subscribe to the list but no one else.
You can use ban_list to accomplish this. You just have to revert the
matching criteria. For example if you want to allow only example.org and
example.com you can use the following regex


Aditya Jain

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