Hello.
Thank you very much. I have read this documentation in its entirety. I've used multiple configurations and this absolutely doesn't work.
For example, the mailing address "STETSENV@JMEIL.COM" was registered (subscription) yesterday without any problems. This is just an example. There are a lot of such or similar email addresses.
I have my php script in it. It was developed with the present in mind. Bots have not been able to register on my site for almost a year.
So the question arose: how do I intercept the registration process and some others to make it impossible for bots to work.