On Fri, 21 Apr 2017 09:21:48 -0700 Kurt H Maier <k...@sciops.net> wrote:
> Greylisting is a hack, an abuse of a side-effect. Most such > approaches have deleterious side effects. This particular side > effect is why I don't like greylisting in general, even though it's > fairly effective. Do you answer your phone before looking at the number/caller? It is not a hack at all. The only problem that keeps coming up is large MTAs that I have concluded, wish to discourage it as it increases their costs (I am sure they know what IPS may send mail and could publish SPF records much more usefully (they probably block windows boxes etc. from connecting to port 25 to avoid being blacklisted)). It would be nice if SPAMD/SMTPD/GREYSCANNER/SCRIPTS could be integrated/improved to the point that checks could be completed whilst the connection is still stuttering and then the connection speed back up once completed. Unfortunately, it is often dumb spam bots that hang around and the likes of hotmail that disconnect early. So I guess any efforts there *may* be a waste of time anyway.
