Anti Spam Smtp Proxy
I just came across the Anti Spam Smtp Proxy. It seems to be a competitor to spamassassin – but it has a very different philosophy. Spamassassin only tags the mails while assp seems to block them at the SMTP level. Since there might be some false positives with statistical spam detection I would probably prefer spamassassin …but I am still fan of the idea to only accept signed emails at the SMTP level. Which goes into the assp direction…