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):
@mx30.xyz.comI try to filter out @mx and .xyz.com, but the rule never catches it.
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 "xyz.com" in the "Deny messages from the following Internet/address domains" field, which is found in the SMTP Inbound Controls -- Inbound Sender Controls.
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