On Fri, 21 Sep 2018 16:57:29 +0000, Ralph Seichter wrote: ...
Imagine an address A subscribed to this mailing list in a read-only fashion (a.k.a. "lurker"). A uses list posts as triggers to send spam from address B, which does not even need to be subscribed. How would the list admins ever be able to connect A to B?
Traffic modulation and analysis. Unfortunately that requires that every spam addressee to respond quickly, and that mails to the subscribers are either selectively suppressed or greatly delayed (both not very acceptable), to correlate resulting spams with list adressees.
Don't want to enumerate obvious countermeasures by spammer here - at the end it still can just resubscribe with a different address.
Probably only acceptably doable by only using postings made by agreeing 'spamtrap' posters, and letting the mailing list randomly delay only those postings.
- Andreas