recipient block (incoming)

Hi guys!

i have set the recipient_delimiter to “.” in order to use different mails as credentials.
So example. user.amazon@domain.tld user.facebook@domain.tld user.whatever@domain.tld… you get the point.

My problem is now that user.whatever@domain.tld is on some spam distribution lists so I like to block all mails that goes to user.whatever@domain.tld.
How can I do that?

I assume that global_rcpt_blacklist.map is for outgoing mail only?

Thanks guys

Just add a sieve filter to the user@domain.tld to mark as junk and bounce all the incoming emails for that account?