Any chance you could get records of the full headers used on these fake
unsubscribe emails? Might be some commonality that's filterable.

It'd be a pain, though... somehow I doubt standard listserv software has
that capability.

Or perhaps you could require manual confirmation to unsubscribe?

- Sai

On Mon, Dec 15, 2008 at 2:37 AM, Henrik Theiling <[log in to unmask]> wrote:

> Hi!
> There were complaints that Conlang-L subscriptions got cancelled
> unvoluntarily by forged email unsubscription requests.  My guess is
> that it is a new form of spam to drive people nuts.
> The whole thing seems to me like an exploit of the Listserv software:
> it sends out confirmation requests for subscription requests, but does
> not do so for unsubscription requests.  It may be that someone is
> forging sender addresses to get on people's nerves.
> Anyone?
> Bye,
>   Henrik