a lot of spam, how to control it?

a lot of spam, how to control it?

hi, since 1 week now my inbox mail is receiving a lot of spam, like 20-30 mails per day, this didnt happen two weeks ago, so, whats is the problem?, how to control it? are the filters failing? i cant add it to "blacklist" cause all are differents like something@a.download or something2@b.download or asdasd@something.top, btw, zoho mail have black list ?, i didnt see it on config

cheers