spam black/white lists case sensitive?

Remco Barendse mailscanner at BARENDSE.TO
Sat Jun 14 17:05:41 IST 2003

I'm using MS 4.20-3 and noticed that some blacklisted mail is not being
tagged / filtered.

My spam blacklist is all in lowercase, whereas the sender's domain name
uses uppercase letters as well.

I have this in my blacklist file:
From:          yes

The spammer is sending mail from

Are these lists case sensitive?

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