Mail transport protection

You can configure actions for detected threats on the transport layer for each ESET Mail Security module (Antivirus, Anti-Phishing and Antispam) separately.

Actions to take if cleaning not possible:

No action - Retain infected messages that cannot be cleaned

Quarantine message - Puts infected messages to the quarantine mailbox

Reject message - Reject an infected message

Drop message silently - Deletes messages without sending NDR (Non-Delivery Report)


NOTE

If you select No action and at the same time have Cleaning level set to No cleaning in ThreatSense parameters of Antivirus and antispyware, then the protection status will change to yellow. This is because it is a security risk and we do not recommend that you use this combination. Change one or the other setting in order to achieve a good level of protection.

mail_trans_protection

Action to take on phishing message:

No action - Keep the message even if it is marked as phish

Quarantine message - Puts messages marked as phish to the quarantine mailbox

Reject message - Reject messages marked as phish

Drop message silently - Delete messages without sending NDR (Non-Delivery Report)

Action to take on spam messages:

No action - Keep the message even if it is marked as spam

Quarantine message - Puts messages marked as spam to the quarantine mailbox

Reject message - Reject messages marked as spam

Drop message silently - Delete messages without sending NDR (Non-Delivery Report)

SMTP Reject Response

You can specify a Response code, Status code and Response message which define the SMTP temporary denial response sent to the SMTP server if a message is refused. You can enter a response message in the following format:

Response code

Status code

Response message

250

2.5.0

Requested mail action okay, completed

451

4.5.1

Requested action aborted:local error in processing

550

5.5.0

Requested action not taken:mailbox unavailable

554

5.6.0

Invalid content


NOTE

You can also use system variables when configuring SMTP Reject Responses.

Write scan results to message headers

When enabled, scan results are written into message headers. These message headers start with X_ESET making them easy to recognize (for example X_EsetResult or X_ESET_Antispam).

Add notification to the body of scanned messages offers three options:

Do not append to messages - Information will not be added.

Append to infected messages only - Affect only infected messages.

Append to all messages (doesn't apply to internal messages) - All messages will be marked.

Modify subject

When enabled, you can modify templates added to the subject of infected messages, spam or phish messages.

Template added to the subject of infected messages

ESET Mail Security will append a notification tag to the email subject with the value defined in the Template added to the subject of infected messages text field (predefined default text is [found threat %VIRUSNAME%]). This modification can be used to automate filtering of infected messages by filtering emails with a specific subject, for example using rules or alternatively on the client side (if supported by the email client) to put such email messages into a separate folder.

Template added to the subject of spam messages

ESET Mail Security will append a notification tag to the email subject with the value defined in the Template added to the subject of spam messages text field (predefined default text it [SPAM]). This modification can be used to automate spam filtering by filtering emails with a specific subject, for example using rules or alternatively on a client side (if supported by the email client) to put such email messages into a separate folder.

Template added to the subject of phish messages

ESET Mail Security will append a notification tag to the email subject with the value defined in the Template added to the subject of phish messages text field (predefined default text it [PHISH]). This modification can be used to automate spam filtering by filtering emails with a specific subject, for example using rules or alternatively on a client side (if supported by the email client) to put such email messages into a separate folder.


NOTE

You can also use system variables when editing text which will be added to the subject.