WHAT IS DOMAIN NAME SYSTEM BLACKLIST (DNSBL)?缩略图

WHAT IS DOMAIN NAME SYSTEM BLACKLIST (DNSBL)?

Domain Name System blacklist (DNSBL) The email server actively checks the DNSBL database upon receiving a message to verify if the sender’s domain or IP address is listed. The Domain Name System blacklist (DNSBL) is a method used to identify and block spam emails by maintaining a database of blacklisted domains or IP addresses known for […]

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