I have a colleague who has a professional site and his email addresses on that site are being spammed. He tells me that well over 90% of the spam going to that site is coming from a single domain registrar. Does anyone here know of a Perl based spam filter that filters by registrar, or can be modified to filter by registrar?

Thanks in advance for any help!

In reply to Spam filters with registrar based filtering? by dwm042

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