Hello Everyone,
I have defined one Record Creation Rule which is creating Case record. In which our requirement is if any unknown sender sends any email to the Queue selected in this Record creation rule then Email and Contact record should not create.

For this, in record creation rule I have already UNCHECK "Create records for email from unknown senders" this condition and I have also UNCHECK from the personal settings to not create records from Track emails. See screenshot below:

Still it is creating Email Message as well as Contact record if I send Email to an unknown sender.
Please guide me further and let me know if I am missing something in the configuration.