廣告郵件ip黑名單資料庫-Open Relay DatabaseORDB.org is the Open Relay Database. ORDB.org is a non-profit organisation which stores a IP-addresses of verified open SMTP relays. These relays are, or are likely to be, used as conduits for sending unsolicited bulk email, also known as spam. By accessing this list, system administrators are allowed to choose to accept or deny email exchange with servers at these addresses. http://ordb.org
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