Regarding use as a disposable email address

I regret that someone used this domain to create random email addresses, register them with services for fraudulent purposes, and engage in trolling.

This domain is no longer available for such use.

Why were disposable email addresses provided?

I had registered with a mail hosting service for the domain. However, it was supposed to be used as a private domain.

However, the owner of the mail provider service suddenly used my domain and let anyone else use it.

It took me a while to realize what was happening. In the end, the service disappeared, and the domain was just used fraudulently.
This was because of my lack of control.

As the current owner, I control this domain and will not provide anonymous email addresses to anyone or send spam to anyone in the future as long as I remain in possession of it.