[Greylist-users] Why continue to tempblock on the same IP?

[Evan Harris]

Because if you whitelist by IP, that makes it way too easy for spammers to
circumvent.  All they have to do is get ONE email through, getting them
whitelisted, and then they can happily spam thousands of users without any
warning.  They can even continue to forge random from addresses, and it all
gets accepted.

That's too big an opening in my opinion.

Evan


On 25 Jul 2003, Aaron B. Iba wrote:

> Hi All,
>
> I just recently read about the greylisting method, which I like very
> much.  I wonder, however, that once you allow mail from a certain host
> (after it has retried after a tempfail), is it not safe to assume that
> future messages from that host will also queue and retry in a similar
> fashion?  If so, I see no point in issuing future tempfails to the same
> host for different envelope FROM and TO addresses.
>
> What am I missing?
>
> -Aaron