1. Navigate to https://lists.illinois.edu and log in. If you have an Illinois account, you'll do this by clicking the Campus Login button in the top right corner.
2. Locate the list whose owners you need to contact using the Search for List(s) button.
3. Click Contact owners on the mail list's homepage. This is a mailto link that will open a new email in your email client with the list owner's address(es).

List owners can also be contacted by appending -request to the list's address. For example, sending an email to someList-request@lists.illinois.edu will deliver the message to all of the owners of someList@lists.illinois.edu.

The Campus Mailing List service hosts a number of other departmental instances of the mailing list software. A complete list of these can be found here: https://sympadocs.web.illinois.edu/campus-mailing-lists-users-guide/listmasters/
Note that the administrators of mail.krannertcenter.illinois.edu have chosen to disable the 'Contact owners' link.

If you're having any trouble getting in contact with mailing list owners, or have any other trouble with the service, contact the Technology Services Help Desk by email at consult@illinois.edu or by phone at 217-244-7000.