IIS webserver dedicated: remove spam rating to my websites and from my IP

Job ID: 34888610

Budget: €12 – €18 EUR

I own a small dedicated server with 3 domains inside, o/s is windows server 2022 and webserver is IIS.
Very strangely, i have my all 3 domains, under spam rating, so i checked my IP, and also the IP is reported under spam but only from one b.barracudacentral.org
i ask help to fix the security issues of my server and help to find out what's wrong with the 3 domains and the IP in barracuda black list.
Related categories: PHP System Admin Web Security IIS Windows Server