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Rule not catching incoming e-mails from domain

What is the best rule to delete the e-mail from these spammers that change (e.g., they change 30 and 41 on the domain):
I try to filter out @mx and, but the rule never catches it.

Thank you.
Rather than a rule, why not stop it before it hits the mail file by placing the domain name in the Server Configuration document. Place the domain name "" in the "Deny messages from the following Internet/address domains" field, which is found in the SMTP Inbound Controls -- Inbound Sender Controls.

This was first published in August 2003

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