Re: Thinking outside the box

> It's probably not worth their effort. Big lists are still small from a
> spammer's point of view. I guess it would be much easier for them to
> just subscribe to the list.

And they often do, and send (in one message) to a dozen googlegropes or
yahoogropes (though I don't recall seeing much of that lately).

> But - and I apologise for repeating myself - why not use the sender's
> email address as a unique password-like identifier? And put that in a
> header. Call it 'From'. Works rather well.

Spammers often forge it, when they find a bunch of "associated"
addresses (i.e. all stolen from the same place).

Seth