About Mail Anti-Virus
Mail Anti-Virus scans incoming and outgoing email messages for viruses and other threats. It starts together with Kaspersky Endpoint Security, continuously remains active in computer memory, and scans all messages that are sent or received via the POP3, SMTP, IMAP, MAPI, and NNTP protocols. If no threats are detected in the message, it becomes available and/or is processed.
On detecting a threat in an email message, Mail Anti-Virus performs the following:
- Identifies the type of object detected in the email message (such as a trojan).
- An email message is assigned one of the following statuses:
- Probably infected. This status is assigned if the scan cannot determine whether or not the email message is definitely infected. The email message may possibly contain a section of code that is typical of viruses or other malware, or the modified code of a known virus.
- Infected. This status is assigned to an object if the scan of an email message finds a section of code of a known virus that is included in the anti-virus databases of Kaspersky Endpoint Security.
- Not found. This status is assigned to an object if the scan of an email message does not detect viruses or other threats.
The application then blocks the email message, displays a notification about the detected object (if this is specified in the notification settings), and performs the action that is specified in the settings of Mail Anti-Virus.
This component interacts with mail clients installed on the computer. An embeddable extension is available for the Microsoft Office Outlook® mail client that lets you fine-tune the message scan settings. The Mail Anti-Virus extension is embedded in the Microsoft Office Outlook mail client during installation of Kaspersky Endpoint Security.
Operation of Mail Anti-Virus is signified by the application icon displayed in the taskbar notification area. When Mail Anti-Virus is scanning an email message, the application icon changes to 
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