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Message-ID: <49bf44f10608291634o4ce0b947i6355278dc344faad@mail.gmail.com>
Date: Tue, 29 Aug 2006 16:34:19 -0700
From: Grant <emailgrant@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Greylisting idea
In-Reply-To: <44F46F81.3050308@badapple.net>
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> > Greylisting seems to be the most effective way of eliminating unwanted
> > email. The problem is that it also has the potential to eliminate a
> > legitimate email. Couldn't a feature be added to greylisting software
> > that dispatches an email to the sender of any email that is
> > temporarily rejected and doesn't retry within a certain amount of
> > time? The email could say something like, "Your message of {date} was
> > rejected as possible spam. Please call us at {phone_number}."
> >
> > - Grant
>
> I'd just configure a retry time of something large if you're worried
> about it. IIRC the default is one day and you could raise it to two days
> on a slow system without worrying that the db is getting too large.
How exactly are legitimate messages lost through greylisting? I've
come up with these:
1. legitimate messages that don't retry (someone mentioned Amazon newsletters)
2. legitimate messages that take longer than the maximum specified
retry period to retry (has anyone run into a mail server that takes
longer than a day to retry?)
3. legitimate messages that retry from a different server each time
they retry (someone mentioned that they have seen this)
- Grant
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