Roger B.A. Klorese wrote:
> > This reminded me of 'greylisting', which I mentioned
> > previously on this
> > list:
> >
> http://projects.puremagic.com/greylisting/
>
> The difference is that with greylisting, you keep track of the know good
> senders. So only the first e-mail to/from a particular person coming
> through a particular mailserver is delayed.
>
> My concern about implementing greylisting -- which in all other respects
> is a very reasonable approach -- is that it breaks the (inaccurate but
> widely prevalent) notion that email is an instantaneous medium.
Don't know what can be done about that.
> Further, I'd guess it doesn't deal with VERPs, especially mailing list
> VERPs well -- if the envelope sender is new on each piece of email, all
> messages will be delayed.
This would make the greylisting software more complicated, but there are
a couple solutions:
If you know what pattern the VERP is, then you could have a
wildcard match.
Watch for subscription requests or verifications, to add those
to the list.
James Graves
Delta Mobile Software http://www.deltamobile.com
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