Delivery Status Notification

Use this section to notify a sender when a message has been quarantined or sent encrypted for a specific reason. You can also set the number of notifications per hour per mailbox. The notification consists of a Delivery Status Notification (DSN) message. If you allow access to the outbound quarantine, the message includes a link to release the message from the quarantine.

By default, DSNs are only delivered to senders whose domain is filtered on the system. You have the option to enable delivery of DSNs to senders from unknown domains.

 

Caution! During an outbound spam campaign a large number of DSNs could be sent to forged senders, possibly causing the server to be blacklisted.

To enable Delivery Status Notification:

Manage >> Outbound IPs >> {Outbound IP}

1.

Select the checkboxes you want to enable when a message is quarantined. Selecting any option displays a text box below it. Be default, a notification is sent to the message sender. If you wish to also notify someone else, enter their email address in the text box below the option.

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Quarantined by non-compliance filters

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Quarantined by compliance filters

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Sent as an encrypted message

Note: An alias that is not attached to an actual Email Security email address is considered an unknown sender. These addresses will not receive a notification if sent messages are quarantined.

2.

Select the maximum number of messages to be delivered per hour, per mailbox. Options are 1 through 10, or unlimited.

3.

Optional: For appliances, select the checkbox to include senders from unknown domains. This option is only visible to system administrators.