Just for the record, hiro mailed his IP address to me and it was enlisted in almost every blacklisting service out there, statistics showed that this IP was blocked for about 70 out of 87 days total because of spamming activities. To make that clear again: No one has to fear, that he will be blocked because of a dynamic IP or NAT, that is completely unrelated. NAT only complicates the task of keeping the network "clean" for the provider. We're not running any special strict IP filtering either. If you encounter a block, your IP has been misused for spamming, please write down your IP, check it against blacklisting services and then file a complaint against your provider. It is in his interest to shutdown the spamming clients/users.