block SPAM emails with invalid/non-registered domains (i.e. don't fill up SPAM folder)
I get a lot of SPAM emails (which Yahoo correctly routes to SPAM), but many of them are coming from non-registered domains. These fill up the SPAM folder, making it harder to peruse it for valid emails. Typically, the most offenders use the same username, but change the domain name to bypass being able to block them. So the request is to BLOCK non-registered domains so they don't even appear in SPAM folder.
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Ronald Catallo
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