I-D Action: draft-santos-smtpgrey-02.txt

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	Title           : SMTP Service Extension for Greylisting Operations
	Author(s)       : Hector Santos
                           Evan Harris
	Filename        : draft-santos-smtpgrey-02.txt
	Pages           : 20
	Date            : 2012-04-27

    GREYLIST is a SMTP extension to formalize the widely supported
    Greylisting mail filtering method and to help support SMTP rejected
    transports by following a new formal structured 4yz server temporary
    rejection response by including a "retry=time-delay" tag string which
    SMTP clients can use to optimize the rescheduling of the mail
    delivery attempts.  With adoption, network overhead reduction in
    wasteful mail delivery attempts will be realized.

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