Plesk Premium Antivirus does not detect infected emails

Symptoms

• Plesk Premium Antivirus does not detect infected emails.

• Antivirus protection is enabled for an email account at Domains > example.com > [email protected] > Antivirus.

• The Plesk Premium Antivirus is shown as running at Tools & Settings > Services Management.

Cause

Mail filters are disabled/misconfigured in the Postfix configuration.

Resolution

1. Connect to the Plesk server via SSH.

2. Open the file /etc/postfix/main.cf in a text editor. In this example, we are using the vi editor:

   # vi /etc/postfix/main.cf

3. Adjust the smtpd_milters and non_smtpd_milters (if exists) parameters the following way:

   Note: Make sure that these parameters are not commented with # at the beginning of the line.

   smtpd_milters = , inet:127.0.0.1:12768
   non_smtpd_milters = 

4. Save the changes and close the file.

5. Verify the changes:

   # grep -ir milters /etc/postfix/main.cf

   smtpd_milters = , inet:127.0.0.1:12768
   non_smtpd_milters = 

6. Restart the postfix, pc-remote, drwebd services:

   # service postfix restart
   # service pc-remote restart
   # service drwebd restart