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> > Greylisting seems to be the most effective way of eliminating unwanted |
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> > email. The problem is that it also has the potential to eliminate a |
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> > legitimate email. Couldn't a feature be added to greylisting software |
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> > that dispatches an email to the sender of any email that is |
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> > temporarily rejected and doesn't retry within a certain amount of |
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> > time? The email could say something like, "Your message of {date} was |
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> > rejected as possible spam. Please call us at {phone_number}." |
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> > |
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> > - Grant |
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> |
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> I'd just configure a retry time of something large if you're worried |
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> about it. IIRC the default is one day and you could raise it to two days |
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> on a slow system without worrying that the db is getting too large. |
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How exactly are legitimate messages lost through greylisting? I've |
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come up with these: |
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|
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1. legitimate messages that don't retry (someone mentioned Amazon newsletters) |
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2. legitimate messages that take longer than the maximum specified |
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retry period to retry (has anyone run into a mail server that takes |
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longer than a day to retry?) |
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3. legitimate messages that retry from a different server each time |
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they retry (someone mentioned that they have seen this) |
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|
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- Grant |
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-- |
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