Re: [gentoo-project] Spam reduction proposal - switching lists to a web-form for subscription

[Petteri Räty]

Robin H. Johnson wrote:
> Lately we've been seeing a LOT of spam being sent to the mailing list
> subscribe mechanism, with the side effect that the subscribe mechanism
> responds to the From header address with a confirmation request. That
> address (along with the envelope sender) are unfortunately forged.
>
> The volume of the confirmation requests is getting worse than direct
> spams, because the spam filtering considers the confirmation requests to
> be valid email (they would be, except for the fact they are
> unsolicited).
>
> To combat this problem, I'd like us to consider switching the subscribe
> mechanism for the mailing lists to be a web form (protected with
> recaptcha). Unsubscribe will continue to be offered as an email action
> for the moment, because it ignores the mail if the address was not
> subscribed.
>

I have no objection to this one as I have been receiving quite a few of
these...

Regards,
Petteri