Anti spam rules

Hi all, creating a rule for automatic domain spam doesn’t work, I’ve tried everything and every day I’m inundated with spam of all kinds from a couple of domains; by domain I indicate a typology of this type for example: … @
How can I do? Can anyone help me by pointing out the exact steps?
Thank you very much.

Select any message from a sender and by right-click on it in the message list choose Move to Junk > Move to Junk and Blacklist domain.

All future messages from any address will now be automatically moved to Junk.

Thanks Gary for the quick reply; I have already done it and it does NOT work, which is why I asked here!

When you open the Blacklist Rule it should look like this:

I will verify or I will insert it by hand.
Thank you,