Roland Plüss schrieb:
I'll try mapping zen.spamhaus.org to 127.0.0.2 in my /etc/hosts. This should not require a DNS lookup and hopefully it works then. Let's see
You must not do this if you want to use zen.spamhaus.org. Please follow the given advices and read something about how dnsbls work. A good point to start might be http://www.spamhaus.org/dnsbl_function.html