Blocking an Email Address

This article contains instructions for:

• Webmail
• Exchange
• UOmail
• Proofpoint (Applies to all email systems)

If you aren't sure which email system you are on, please see All About Email at UO.

Webmail

1. Determine the actual sender address of the message:
   • View the full email headers.
   • Find the phrase Return-Path:. The email address that follows it is the one you want. (That email address may be different than the "From:" email address.)
2. Go to proofpoint.uoregon.edu
3. Log in using your full UO email address (DuckID@uoregon.edu) and your Duck ID password
   • If you have Duo enabled, you will be prompted to complete the two-step login process before you can access Proofpoint.
4. In the bottom left corner, click on the Lists tab
5. In the same column on the left side of the screen, click Blocked Senders List
6. Once this highlights, click the New button that is directly to the right of the University of Oregon logo in the top right corner of the page
7. At this point you have two options:
   • If you are receiving spam emails from only one address (name1@domain.com, for example) then you should enter this whole email address (the one you found in step 1 above). The system will now automatically block any email messages from this person.
   • On the off chance you are receiving spam emails from multiple address that all end with the same domain — name1@domain.com and name2@domain.com, for example — you should enter "domain.com". This will now block all email messages coming from anyone whose email is through domain.com
8. Once you have entered the address or domain, click the Save button and log out.

Exchange

1. Sign in to Outlook Web App by navigating to https://outlook.uoregon.edu in a web browser.
2. At the top of the page, select Settings > Options.
3. Select Block or allow. 
4. To add an entry to blocked senders, enter the email address or domain that you want to block in the Enter a sender or domain here box, and then press Enter or select the add + icon next to the text box.
5. You an optionally select the Don’t trust email unless it comes from someone in my Safe Senders and Recipients list or local senders check box to treat all email as junk unless it comes from someone included in your Safe Senders and Recipients list or local senders.
6. Select Save to save your changes.

UOmail

1. Go to https://uomail.uoregon.edu
2. Log in with your full email and password.
3. In the top right corner, click on the gear icon ⚙ (settings).
4. Find and click View all Outlook settings.
5. Go to Junk email from the navigation bar.
6. Under Blocked senders and domains click +Add.
7. Type in either the full email address or just the domain of the sender to block all emails from that domain.
8. Press the Enter key to submit the email address or domain to block.
   • You can edit the email address or domain at any time by clicking on the Pencil icon.
   • You can delete an email address or domain by clicking the Trash can icon.
9. Click the Save button at the top to save your changes.
10. click the X to exit back to your mailbox.

Proofpoint

1. Determine the actual sender address of the message:
   • View the full email headers.
   • Find the phrase Return-Path:. The email address that follows it is the one you want. (That email address may be different than the "From:" email address.)
2. Go to proofpoint.uoregon.edu
3. Log in using your full UO email address (DuckID@uoregon.edu) and your Duck ID password
   • If you have Duo enabled, you will be prompted to complete the two-step login process before you can access Proofpoint.
4. In the bottom left corner, click on the Lists tab
5. In the same column on the left side of the screen, click Blocked Senders List
6. Once this highlights, click the New button that is directly to the right of the University of Oregon logo in the top right corner of the page
7. At this point you have two options:
   • If you are receiving spam emails from only one address (name1@domain.com, for example) then you should enter this whole email address (the one you found in step 1 above). The system will now automatically block any email messages from this person.
   • On the off chance you are receiving spam emails from multiple address that all end with the same domain — name1@domain.com and name2@domain.com, for example — you should enter "domain.com". This will now block all email messages coming from anyone whose email is through domain.com
8. Once you have entered the address or domain, click the Save button and log out.