The acceptable spam score or spam rate is 0.1%, anything above than this or higher will get your account or IP address blocked to prevent sending even more of unwanted email or stuff. A blacklist is a database which helps to determine the legitimacy of an email address or IP address. These are run by reputed or independent organisations to defend email spamming, phishing and fraudulent activities of illegitimate email senders or spammers. These organisations have intimate connections with gian...