How to remove the ability to register non-existent addresses?

Question

Email

There is a test.ru domain on the Yandex.connect mail. I set up forwarding to [email protected], if there is no address, then the mail falls to me. This is done so that in case of an error in the addresses, the clients do not disappear. So, they began to massively register for domain mail in social networks and on various sites. Notifications began to come from randomly generated addresses:
[email protected]
[email protected]
, etc.
How to deal with it?

Answer 1

No way. Spammers send to auto-generated addresses, hoping that one of them will be real :)