[exim] Blocking a Class C

Just going over my spam and I find this IP 195.133.39.99

sending a lot of junk. How can you block such a class C?

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Yahweh, Queen & country!Never Satan President Republic!Beware AntiChrist rising!
Look at Psalms 14 and 53 on Atheism https://www.empire.kred/ROOTNK?t=94a1f39b
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