Access Keys:
Skip to content (Access Key - 0)

How do I manage my "blocked senders" or "allowed senders" list with MIT spam filtering?

On this page:


  • How do I add an email address or domain to my "bad senders" or "good senders" list?
  • black list or white list

Context and Notes

  • It can take up to an hour for your block/allow lists to sync with the server. In the interim you may still see messages from blocked senders delivered to your inbox or messages from allowed senders delivered to your Junk folder.
  • Spam Filtering does not allow you to block senders inside your organization (with an address). A workaround for this is to use Filters.  If you believe that senders with email addresses have been caught by the spam filter, please send email to the IS&T Service Desk with full details concerning the message in question so that the it can be investigated further.  Many times, the mail appears to have been sent from a address, but was actually sent using another sending service (such as Mailchimp, Mailjet, etc.)

Manage your "blocked" or "safe" lists

With Outlook on the Web

  1. Visit and login.
  2. Open Settings (gear icon in the upper-right).
  3. Select Mail > Junk Email

  4. From this screen you can add and remove users from your blocked and safe senders lists.

With Outlook for Windows

See: Microsoft's Block or Unblock Senders

All other email clients

As of this time, no other email clients allow you to manage your Safe Senders and Blocked Senders lists. While you can move messages to/from the Junk folder and review the Junk folder, none of these actions will affect your Safe Senders and Blocked Senders lists.

IS&T Contributions

Documentation and information provided by IS&T staff members

Last Modified:

November 07, 2023

Get Help

Request help
from the Help Desk
Report a security incident
to the Security Team
spam spam Delete
deny deny Delete
allow allow Delete
list list Delete
blocked blocked Delete
senders senders Delete
sender sender Delete
lists lists Delete
c-spam-filtering c-spam-filtering Delete
whilelist whilelist Delete
blacklist blacklist Delete
while-list while-list Delete
black-list black-list Delete
Enter labels to add to this page:
Please wait 
Looking for a label? Just start typing.
This product/service is:
Easy to use
Difficult to use

This article is:
Adaptavist Theme Builder (4.2.3) Powered by Atlassian Confluence 3.5.13, the Enterprise Wiki