Email greylisting: Difference between revisions
Jump to navigation
Jump to search
imported>Meg Taylor (subpages) |
imported>Meg Taylor No edit summary |
||
| Line 5: | Line 5: | ||
On the other hand, a delay will always give more time for new sources to be blacklisted. | On the other hand, a delay will always give more time for new sources to be blacklisted. | ||
Revision as of 00:02, 3 November 2013
Greylisting involves returning a temporary reject on the theory that only legitimate transmitters will retry after a temporary failure.
Greylisting is controversial as to its long-term effectiveness. If enough spam transmitters add retry capability, greylisting will be like a partially-effective anti-biotic. The pathogen population will mutate to a more resistant form.
On the other hand, a delay will always give more time for new sources to be blacklisted.