[Mailman-Developers] Mass subscriptions as a DoS attack

Trolls can wreak havoc by subscribing to one or more high volume mailing lists on behalf of a target one. For example, someone could subscribe this list to the Linux kernel mailing list. Everybody would see the confirmation message, but by the time someone realizes the need to unsubscribe, the list will have been flooded, thereby realizing the DoS.

Are there mechanisms to prevent that?

Best Ale