Mailing the story:

Clam AntiVirus (ClamAV) is an open-source anti-virus framework used by millions of people and companies all around the world, providing free malware protection by default for everyone. It is especially effective on email servers, as it works on just about all possible MTAs (postfix, exim, etc). It is easy to set up, customizable, and has a reliable method of virus definition updates. In this tutorial, we’ll be explaining how to install ClamAV on your Debian 9 VPS, as well as how to use it to check for and remove any malware or security vulnerabilities.