E-Mail Block List
NIU blocks messages from being delivered from individual e-mail addresses, domains or IP addresses that appear on the NIU blocklist. See Currently being blocked for a complete list.
The enterprise spam software allows customers to create a personal blocklist. Follow the steps below to see how the local blocks can be accomplished. Messages are never delivered from individual e-mail addresses, domains or IP addresses that appear on this list that you create.
First log in to CanIt Pro.
- Go to http://www.canspam.niu.edu
- Log in with your AccountID and password
- If you do not see the image below, click "Simplified Interface.”

- Click the "Permit list, block lists, etc." button
- Click "Rules"
- To blocklist one sender, click on "Senders"
- Enter aspecific Sender's e-mail address and click "Add Rule" and then scroll down.
- Under "Action" click on the drop down arrow and select "Always Reject."
- Click "Submit Changes" and then scroll down.
- At any point, users may click on “Senders,” scroll down and see a list of all senders they have taken action on, whether they have been permitted or blocked.
- If you would like to filter this list and see only those users that have been blocked, click on the link for “Always Reject.”