Securing Emails on my VPS Server

Job ID: 32865309

Budget: ₹1,500 – ₹12,500 INR

Hello,

I am using an VPS server with Linux Centos 7 and I am facing an issue of mail spamming and botnet participation for my domain and IP. I want to secure my email services and my email accounts from spamming and other attacks on server for that I need and expert who can help me resolve this problems and set a proper server security to save from attacks.
Related categories: System Admin Linux Web Security DNS CentOs