Mail transport protection

Enable email protection by protocol filtering

The IMAP and POP3 protocols are the most widespread protocols used to receive email communication in an email client application. ESET Server Security provides protection for these protocols regardless of the email client used.

ESET Server Security also supports the scanning of IMAPS and POP3S protocols, which use an encrypted channel to transfer information between server and client. ESET Server Security checks communication utilizing the SSL (Secure Socket Layer), and TLS (Transport Layer Security) protocols. The program will only scan traffic on ports defined in Ports used by IMAPS / POP3S protocol, regardless of operating system version.

IMAPS / POP3S scanner setup

Encrypted communications will not be scanned when default settings are in use. To enable the scanning of encrypted communication, navigate to SSL/TLS protocol checking.

The port number identifies what type of port it is. Here are the default email ports for:

Excluded applications—This option excludes specific applications from being scanned by Mail transport protection. It is useful when Web access protection causes compatibility issues. Click Edit and then Add to choose an executable from the list of applications to exclude it from protocol filtering.

Excluded IPs—This feature enables you to exclude specific remote addresses from being scanned by Mail transport protection. It is useful when Web access protection causes compatibility issues.