greylisting_on_sdf
Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| greylisting_on_sdf [2021/03/20 04:37] – [SDF specific implementation] hc9 | greylisting_on_sdf [2024/09/04 07:27] (current) – … hc9 | ||
|---|---|---|---|
| Line 7: | Line 7: | ||
| ==== Described ==== | ==== Described ==== | ||
| - | In short, it works like this. All incoming mail delivery attempts are told to "try again later; can't take delivery now". That in itself is not new, and all email transport systems know to expect those responses any time from any place, for any number of different reasons. | + | In short, it works like this. All incoming mail delivery attempts are told to “try again later; can't take delivery now”. That in itself is not new, and all email transport systems know to expect those responses any time from any place, for any number of different reasons. |
| The positive benefit of Greylisting is that spam mail might not bother with a second delivery attempt. | The positive benefit of Greylisting is that spam mail might not bother with a second delivery attempt. | ||
| Line 21: | Line 21: | ||
| ==== SDF specific implementation ==== | ==== SDF specific implementation ==== | ||
| - | * Type/run unquoted | + | * Type/run unquoted |
| * results shown are not instantaneous, | * results shown are not instantaneous, | ||
| * greylist -gv will show the earliest time when the message will be accepted; and the three fields of the tuple. | * greylist -gv will show the earliest time when the message will be accepted; and the three fields of the tuple. | ||
| Line 28: | Line 28: | ||
| For VPM and VHOST accounts, you can use `mkvpm gry ' to toggle greylisting on and off. | For VPM and VHOST accounts, you can use `mkvpm gry ' to toggle greylisting on and off. | ||
| - | * When the very first delivery is attempted, SDF issues a response | + | * When the very first delivery is attempted, SDF issues a response |
| * (host mx.sdf.org[192.94.73.18] said: 451 4.7.1 Connection deferred. (in reply to RCPT TO command)) | * (host mx.sdf.org[192.94.73.18] said: 451 4.7.1 Connection deferred. (in reply to RCPT TO command)) | ||
| Line 38: | Line 38: | ||
| http:// | http:// | ||
| - | [[http:// | + | [[http:// |
| ---- | ---- | ||
greylisting_on_sdf.1616215065.txt.gz · Last modified: 2021/03/20 04:37 by hc9