[exim] Spamtrap harvesting idea using fake authentication

Here's an idea I'm working on. Wondering if anyone else is interested in
participating.

As you all know there are a lot of SMTP servers (inbound) where there is
o authentication option. And we all know that there are lots of hackers
and hack viruses that work on authenticated smtp servers looking for
weak passwords so they can authenticate and send spam.

Suppose we reconfigured servers with no authentication configuration to
advertise that they take authentication and that you have a fake
authenticator that accepts any password. Something like this:

fixed_plain:
driver = plaintext
public_name = PLAIN
server_prompts = :
server_condition = true
server_set_id = $auth2

Of course you know that anyone authenticating to the server is spamming.
But we can harvest the IP and add them to a blacklist.

Does anyone find this interesting?

If you do I'm still experimenting but once I like the setup I can send
you code that will allow me to collect IP addresses of people hacking
your system.