Large number of spam

Greetings everyone,

I am facing a serious problem with my CWP server, all my clients' email accounts receive a lot of spam. I enabled AntiSpam but it seems to have no effect, can anyone give me any tips on how to reduce the amount of spam my clients receive in emails?

Thanks

there is too much detail
my advice should get professional help
attention You may experience e-mail receiving and sending problems

opinions
1 - did you apply it. https://wiki.centos-webpanel.com/how-to-configure-spamassassin
2 - DNSBL services can be added (search every service well)
3 - spamassassin custom confıgration (you can lose your mind)
4 - spamasssasin rules (do a good review)
5 - Razor - Pyor - Dcc  add services % 85 success
6 - own white list black list (Create your own database with continuous tracking and updating.)

And what's more ... but if you apply them, you get good results.

This is a serious business. Remember there are dangers! Be careful.
good luck