Which smtp servers and client follow or honor Greylist SMTP retry hint
for rescheduling retries?
https://tools.ietf.org/html/draft-santos-smtpgrey-02
I wrote this draft a while ago, wondering if any software beside mine,
Wildcat! SMTP, supports it?
It has been every efficient and it has helped minimized the retry
attempts for delivery of mail to 2 with the shortest period.
--
HLS
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