I receive about 100 spams a day, arriving from open relay smtp servers. My question is : why the smtp server of my provider doesn't block email which domain is not the same as the relayer domain ? it coud be an easy solution to stop spam. If someone can explain me why this simple solution is not applied, i'm all ear opened.
update: the reason why is simple: sending a legitimate email from myself@myjob.com actually using relay smart.isp.net from myhome.isp.net is not a spam.
