[Mailman-Users] Can we make lists invite only?

Hi there.

I've been using Mailman 2.1 for ages and I love it but recently I have a problem with thousands of messages per day from spammers sending subscription requests.

On the Privacy options section I set 'advertised' to 'No' and 'subscribe_policy' to 'Require approval' but that doesn't work to stop the subscription emails.

Is there a way to make a list 'invite only'? I tried to find such an option but was unable to do so...

Regards, John Elliot V

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