Fri, 1 Sep 2017 17:51:39 +0200 Holger Weiß <[email protected]> wrote:
> We're talking about blocking service providers who have *local* > spammers I would also like to add that it's quite easy to compromise your server, i.e. to force putting it into such block list. You really need an insanely advanced registration algorithm (or very restrictive, like phone confirmation) in order to avoid this and this is not simpler than deploying/implementing SPAM filtering. So you end up deploying both, like this actually happened with SMTP.
