[anti-abuse-wg] Question about spam to abuse inbox

Hi aa-wg,

For some context, today and yesterday I have been receiving spam in the
form of fake abuse notices to my abuse contact email address.

Is there a generally accepted standard for when it's okay to block an
address or a prefix from emailing your abuse contact?

I consider being able to contact the abuse email address of a network a
rather important function, so I prefer not to block it.
But also as I have more relaxed spam filters for the abuse contact to make
sure nothing gets lost, it feels like blocking the address/prefix is my
only option other than manually filtering through these emails (10 so far
in total, today and yesterday).

So back to the question, is there a generally accepted point at which
blocking an address/prefix is fine?

Thanks,
-Cynthia
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