Hi,
For years I ran a Mailman list on my own server, until it obviously became too much of a load for certain ISPs to think I was sending legitimate Email. The final straw was when Microsoft blacklisted my IP from sending to all of their Email services (Hotmail, live.com, Outlook, etc.). I decided to move that heavy traffic list to groups.io. Still, I wanted there to be a placeholder at the list's old URL that would tell people the list has moved, and where to find it. For this reason, I created a new, empty, dummy list with the old list's name, and set subscriptions to require moderator approval. I have a Milter set up to block all inbound mail to the list's old addresses with a 551 failure message giving the URL of the new list. However, from time to time someone will subscribe via the web, so I still need to reject their subscriptions and point them to the new location. Is there any way in Mailman to outright disable any and all subscription attempts for a specific list?
Thanks,
Jayson