Blocking E-Mail Servers

I need a way to block a mail server that is spamming my domain with e-mail likely containing viruses, and apparently generating invalid e-mail addresses with each attempt.

I want to block that particular server address completely from my domain, and there is no way to do this that I can find. Any ideas?

I would contact support. I’m sure they have a way to do it. Also contact the owner of the IP-block that is spamming.

Enter the IP here (ARIN.NET) and it will return the netblock owners contact info.
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