What I do is I have a catch all, and based on the emails I get, I know which emails are made public, and I scout what the threat actors are doing.
For a similar reason I dislike ip2ban, my objective is not to block all attack attempts, I prefer receiving them acknowledging them and being immune to them.
The idea of ignoring attack attempts isn't very safe when you think about it, your body doesn't do that, it creates antibodies upon subclinical expositions. Complete isolation means your immune system is weak and you are more vulnerable to the lightest of exposures.
For a similar reason I dislike ip2ban, my objective is not to block all attack attempts, I prefer receiving them acknowledging them and being immune to them.
The idea of ignoring attack attempts isn't very safe when you think about it, your body doesn't do that, it creates antibodies upon subclinical expositions. Complete isolation means your immune system is weak and you are more vulnerable to the lightest of exposures.