Fysh.Org Email Statistics - Greylisting in the last year
We (possibly only temporarily) turned greylisting off on 2019-10-18.
By 'reporting period' we mean 1 day worth of logs, typically running from approximately 06:30 on the cited day until that time on the next day.
- tuples-attempted - The number of unique tuples we've seen and initially issued a temporary rejection for. The tuples are of the following form: <originating ip>-<envelope from address>-<envelope to address>
- not-retried - Number of the previous tuples that we didn't see any retry attempt for in the reporting period. NB: It's possible the initial attempt might have been very near the end of the reporting period and any retry after it ended. Thus we may erroneously increase this count by a small amount.
- delivered - Number of the attempted tuples that eventually lead to a successful email delivery in the same reporting period.
- retried-undelivered - Number of the attempted tuples that were retried, but did not lead to a successful delivery in the same reporting period. These could be due to:
- Multiple essentially different spams that match the same tuple and were tried close enough together to not pass greylisting.
- Legitimate retries that were too soon to pass greylisting, and any actually successful retry then fell outside the same reporting period.