How to auto block specific comments

So recently i have been almost every day been getting the exact same comment from the same website but a different email about SEO optimization and its always on the same old post from about a month or 2 ago. I have had more posts since then but the comment keeps coming back. Is there a way to permanently prevent this comment from ever being able to be registered by keywords or a plugin to block comments from a site? I do not like spending every day erasing the comment every single time and its really starting to get annoying.