Blocked Senders List

Deep Discovery Email Inspector blocks messages from sender IP addresses, resolved IP address, or email addresses in the Blocked Senders list.

A sender is added to the Blocked Senders list in one of the following ways:

  • Automatically when a message from the sender is detected based on the sender filtering (DHA protection, bounce attack protection, and SMTP traffic throttling).

  • Manually by the administrator

Note:
  • Deep Discovery Email Inspector matches senders against the Approved Senders and Blocked Senders lists only in MTA mode.

  • Deep Discovery Email Inspector automatically removes a sender from the list after the blocking expiry time is reached.

  • The time period filter setting is not applicable for user-defined entries when you select User defined or All from the Rule drop-down list

  • For information on how Deep Discovery Email Inspector filters senders based on the Approved Senders and Blocked Senders list, see Sender Filter Order of Evaluation.

The following table describes the tasks that you can perform on the Blocked Senders list.

Table 1.

Task

Description

Filter the list

Filter the list based on the selected rule type and time period.

Search for a sender

Type a keyword to search for a sender.

Add a sender

Click Add to add a sender to the list.

For more information, see Adding Blocked Senders.

Delete senders

Select one or more senders and click Delete.

Move senders to the Approved Senders list

Select one or more senders and click Move to Approved Senders.

For more information, see Approved Senders List.

The following table describes the Blocked Senders list.

Table 2.

Header

Description

IP Address

View the sender IP address resolved domain IP address for the sender that Deep Discovery Email Inspector blocks.

Domain/Email Address

View the sender domain or email address.

Rule

View the name of the sender filtering/authentication rule that is matched.

Resource Record

View the type of resource record for a sender domain.

Action

View whether Deep Discovery Email Inspector blocks the sender address temporarily or permanently.

Expiration

View when Deep Discovery Email Inspector stops temporarily block senders.

When the temporary blocking action expires, Deep Discovery Email Inspector removes a sender from the list.

Last Updated

View when the entry was last updated.