What is greylisting ?

What is greylisting ?

What is greylisting in SMTP? E-mail Spam has always been a problem that has been around ever since email came into being.variables Greylisting schematic From the above diagram it must be somewhat clear what greylisting is. This video will help you as well. Greylisting video Your browser does not support the video tag. What you can infer from above video is that the email is not accepted and a reject message is sent by the fake SMTP server process even before sending the E-mail body(the DATA command).

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