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TLD and gTLD Rules

 

  • You can allow or deny mails based on the top level domain (TLD) of the external mail server.
  • By default, CSEG accepts mails from all TLD names.
  • You can also add custom TLDs from which you want to allow/block mail.

Open the TLD interface

  • Click 'Domain Rules' > 'TLD & gTLD Rules':


 

  • 'Accepted domains' shows TLDs according to location, and gTLDs by alphabetical grouping. These categories are shown in the column headers and are known as 'Rule Groups'.
  • All TLDs are enabled (accepted) by default.
  • You can disable TLDs/gTLDs from which you do not want to accept mail.
The interface also allows you to:

Add a new custom TLD

  • Click 'Add' from the Accepted domains interface




The 'Add filter rule dialog' will appear. 

  • Choose the category from the 'Rule group' drop-down
  • Enter the TLD name, without the '.' prefix, in the 'Domain suffix' text field
  • Click Save to add the TLD to the list
  • To allow the emails from mail servers with the new TLD, leave it selected
  • To block the emails from the mail servers with the new TLD, de-select it.

Configure TLD based mail filter

  • Deselect TLDs from which you want to block mail. Enable TLDs from which you want to accept mail.