[Greylist-users] Re: Identifying ill configured relays from
tomh at motorsport.com
Sun May 2 10:40:14 PDT 2004
Allan E. Johannesen:
>I tried greylisting last year and gave up with what I viewed as an
>insurmountable problem of identifying the worldwide bogus smtp generators.
>Yahoo has the obvious problem of the same sender/receiver being out of
>potentially different servers every time.
>Who is going to list the world's contents of problem sites and keep it up to
>date? It's beyond my capacity. Even with distributed volunteers who might
>take that on, how would we know a "volunteer" wasn't a spammer?
>I like the concept, but it was denying my site genuinely desired email. It
>sure did cut down on spam.
I haven't given up, but I do recognize the problem. It's probably a
smaller issue at corporate sites where the "important" SMTP servers are
generally well-behaved, but could be much worse at an academic site
where the email usage patterns vary wildly.
One thought I have on this is enabling individual users to manage their
own whitelists using a web page -- either turn off greylisting
completely, or enable specific senders or relays. Really this should be
a relatively straight-forward set of web pages interfacing to MySQL,
should it not?
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