Email greylisting: Difference between revisions
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imported>Meg Taylor (subpages) |
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'''Greylisting''' involves returning a temporary reject on the theory that only legitimate transmitters will retry after a temporary failure. | '''Greylisting''' involves returning a temporary reject on the theory that only legitimate transmitters will retry after a temporary failure. | ||
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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. | ||
*[http://en.wikipedia.org/wiki/Greylisting Greylisting] | |||
Revision as of 23:46, 30 September 2009
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.