Configuring Limits and Exceptions Parent topic

Set limits on the email messages that TippingPoint Advanced Threat Protection for Email processes to:
  • Improve performance by reducing the total number of email messages required to process
  • Restrict senders of relayed messages to prevent TippingPoint Advanced Threat Protection for Email from acting as an open mail relay
Note
Note
Connection control settings take priority over mail relay settings.

Procedure

  1. Go to Administration → Mail Settings → Limits and Exceptions.
  2. Specify the Message Limits settings:
    Option
    Description
    Maximum message size
    Specify maximum message size from 1 to 2047 MB.
    Maximum number of recipients
    Specify number of recipients from 1 to 99,999.
  3. Specify the Permitted Senders of Relayed Mail.
    • TippingPoint Advanced Threat Protection for Email only
    • Hosts in the same subnet
    • Hosts in the same address class
      Note
      Note
      When this option is selected, TippingPoint Advanced Threat Protection for Email will check if the IP address of TippingPoint Advanced Threat Protection for Email and hosts are in the same address class and subnet.
      • TippingPoint Advanced Threat Protection for Email will only allow hosts to relay messages if they are in the same address class and subnet.
        For example:
        • Class A: The TippingPoint Advanced Threat Protection for Email IP address is 10.1.2.3, and the hosts’ IP address is 10.1.2.x.
          Class B: The TippingPoint Advanced Threat Protection for Email IP address is 172.31.2.3, and the hosts’ IP address is 172.31.x.x.
          Class C: The TippingPoint Advanced Threat Protection for Email IP address is 192.168.10.3, and the hosts’ IP address is 192.168.10.x.
      • TippingPoint Advanced Threat Protection for Email will not allow hosts to relay messages if they are in the same address class, but not in the same subnet.
        For example:
        • Class A: The TippingPoint Advanced Threat Protection for Email IP address is 10.1.2.3, and the hosts’ IP address is 11.2.3.x.
          Class B: The TippingPoint Advanced Threat Protection for Email IP address is 172.31.2.3, and the hosts’ IP address is 172.32.x.x.
          Class C: The TippingPoint Advanced Threat Protection for Email IP address is 192.168.10.3, and the hosts’ IP address is 192.168.11.x.
    • Specified IP addresses
      Note
      Note
      Import settings from a file by clicking Import from a File.
      Export settings to a file by clicking Export.
  4. Click Save.