Plesk antivirus license warning

Question

Could you advise the warning about the license issue?
 

"unable to apply the mail antivirus settings because you have reached the maximum number of mailboxes defined by your premium antivirus license key"

 

Answer 1

Premium Antivirus is the default mail antivirus program shipped with Plesk. If an additional license key for Premium Antivirus is not added to the Plesk license key, only 14 mail accounts are protected. It secures random 14 mailboxes in the list of all recipients. There is no permanent list of accounts that are always protected.