Kishor Gavali....................DevOps

What Are Blacklists? A blacklist usually refers to a list of e-mail or IP addresses known to send spam e-mails or some other type of unsolicited messages. Such lists are currently used by mail servers for filtering incoming e-mails and blocking the ones listed, in order to improve mail security and integrity. The blacklist is also the opposite of what is called a whitelist. The Basics First of all, being blacklisted does not mean that you have committed some kind of offense or illegal action. Blacklists have multiple purposes, including the denial of SMTP direct access for dial-up and DSL users, which mostly engage dynamically assigned IP addresses. Users are forced this way to send their mail through their provider's mail servers, which are properly configured. Blacklists may also define what is considered to be an abuse, sometimes in a debatable manner, as no strict rules are set regarding this matter. Some of them include NDR and other auto-responses in their policy in order to ...