wiki:faq/email/greylisting

Version 1 (modified by Jamie McClelland, 12 years ago) (diff)

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Why does it take 20 minutes for a message to get delivered?

May First/People Link uses a technique called "grey listing" to help reduce the amount of spam being sent to our servers. Grey listing means that the first time an email message is sent to our server, our server defers delivery - telling the sending mail server: "Try again later." The next time the sending server tries to send the message, our server accepts it. The reason we do this is because spammers will often not try to re-send after getting deferred the first time.

Most email servers will resend their message within 15 minutes.

Once an email sender/recipient combination has been grey listed once, it will not be grey listed again. So - this step will only happen the first time a sender sends you a message.