Sending, receiving, and organizing email in Outlook.com
Hello Ruby,
The standard block list will not accept partial words or just top level domains like that. We will need to set up an Inbox Rule instead to catch those specific characters in the sender address and automatically move them to the trash.
There are a few different versions of Outlook and they all have the settings in completely different places. Are you using Outlook through your web browser, the New Outlook app for Windows, or the classic desktop version of Outlook that comes with Microsoft Office?