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Important
Important
For SMTP traffic throttling, Deep Discovery Email Inspector checks the senders against the Approved Senders and Blocked Senders lists in the following order:
  • Approved Senders list (IP address)
  • Blocked Senders list (user-defined IP address)
  • SMTP traffic throttling (IP address)
  • Approved Senders list (email address)
  • Blocked Senders list (user-defined email address)
  • SMTP traffic throttling (email address)
Note
Note
You can add up to 2048 entries to the list.

Procedure

  1. Go to Administration → Sender Filtering/Authentication → Blocked Senders.
    The Blocked Senders screen appears.
  2. Click Add.
    The Add Blocked Senders screen appears.
  3. Select and configure one of the following:
    • Domain: Select this option to specify the domain of the senders. You can select one or more Resource record types.
      Note
      Note
      Deep Discovery Email Inspector regularly resolves the specified domain, and adds the resolved IP addresses as a user-defined entry in the Blocked Senders list or updates the resolved IP addresses in the entry.
    • IP address or subnet: Select this option to specify the IPv4/IPv6 address of a sender or the subnet of multiple senders.
    • Email address: Select this option to specify the email address of the sender.
      Tip
      Tip
      Deep Discovery Email Inspector support email domains. For example, *@* indicates all email addresses .
  4. Type a description.
  5. Click Save.
Keywords: blocked senders,Blocked Senders list