Limit Mailing List Postings to Specific Domains


Learn how to specify what happens to messages from non-members that come from specific domains.  You can restrict postings to specific domains, like


Steps to Take

  1. Log in to the list's administration page: with your Active Directory username and password (replace ListName with the actual name of your list. The final character is a lowercase letter 'L' for 'list.')
  2. Find Configuration Categories at the top of the page. Then select Privacy Options > Sender filters
  3. To automatically accept non-member posts from a given domain, enter the following text in the accept these nonmembers setting:


    Where “domain” is replaced with the domain you want to accept. If you want to automatically accept all messages from UCSD email addresses, you need to specify  “” as your domain:


  4. Submit your changes when finished.

Other options include:

For example, if your list receives lots of spam from the domain, enter “^.*” in the “discard these nonmembers” setting. Messages from any address ending in will then be automatically discarded.

Note: Depending on what you want to accomplish, you also need to make sure the generic nonmember action setting is set correctly. This setting specifies what happens to messages from non-members that do not fit any of the sender filters. 

If you still have questions or need additional assistance, please submit a ticket or call the ITS Service Desk at (858) 246-4357