On Fri, 2008-07-25 at 18:15 +0200, Jonas Eckerman wrote: > Michelle Konzack wrote: > > >> in short, if someone declares you as their MX (without your > >> authorization), you should not start listing clients that try to send > >> mail to such domains. > > > Are there ANY leagal reasons to declare someons MX as there MX? > > You miss mouss' point. > > If someone (maliciously or by mistake) declare your system as > their MX, innocent third party mail servers may through no fault > of their own connect to your system in order to send mail to > addresses for wich your system is not a MX.
I think I still miss the point. How can someone else declare the MX of my domain. ( dns poisoning ignored ). If that were possible , he would be getting my mails which is much more a serious issue Anyway for the stats I just created two brand new "A" records with mail.domain.com just for testing , and pointed to a fake smtp server No Mxes pointing to that IP so no real mail should come here For the last 3 days , 154 distinct ips have connected and of them 144 are already listed in zen.spamhaus.org So it doesnt seem to be a very useful effort afterall to list those ips :-(. I would have blocked those mails with spamhaus anyway Thanks Ram
