Hi,
Welcome to Microsoft Community. We understand your frustration of still receiving emails from senders you have already blocked. We'll do our best to assist you regarding this matter.
We would like to inform you that there is no option to block IP addresses in Outlook.com. If you want to have this feature,
you can send a feedback or suggestions to the Microsoft Product Team in this
link as consideration for a future release.
If you still receive spam emails on your email account, I would suggest that you set your junk filter settings to Exclusive. If the Exclusive level was set, messages from senders not on your Contacts or Safe senders lists will
have been sent to the Junk e-mail folder. To do this, please follow the steps below:
- On your inbox, click the gear icon and select More mail settings on the drop down list.
- Under Preventing junk email, click
Filters and reporting.
- Under
Choose a junk e-mail filter, choose
Exclusive and then click Save.
I hope this helps. Let us know if you need further assistance.
Thank you.