Re: Sendmail: How does one blacklist annoying spammers?

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On Mon, 2010-06-28 at 11:22 +0930, Tim wrote:
> On Sun, 2010-06-27 at 13:11 -0400, Genes MailLists wrote:
> >    With GreetPause I am already causing a small delay which works very
> > well for those spammers/bots which are in violation of the standards.
> > However, I have carefully singled out all major email MX outbound
> > hosts for 0 greet pause. But greet pause is an SMTP delay waiting not
> > a rejection as gray listsing does. Graylisting leaves the mail delay
> > in the hands of the other end - I prefer the control in my hands.
> 
> A concern that I have is:  Do you have more than one / enough SMTP
> server processes?  If you get hit with a scad of spam, each one pausing
> the transaction, do you DoS yourself?  (Denial of Service.)
----
greylisting is actually lightweight and will reduce the load
----
> 
> >   I want email coming through fast - when I'm on the phone with
> > someone and they say i just sent you the xxx .. i dont want to wait
> > for it.
> 
> I agree.  It's highly annoying to conduct business with someone, and
> while you're chatting with them on the phone, waiting and waiting, and
> waiting, for that e-mail they sent /some/ time ago, the goodwill dries
> up.
----
yeah but if it's important either...

have them send a dummy e-mail, wait 5 minutes and then send the
important e-mail or wait 15 minutes. Hardly a big deal.

Craig


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