I have been reading where many system administrators have decided to block all access to their systems from IP addresses that do not resolve. I have heard and read both sides of the debate and see this as the "golden double-edged sword" where it could be a blessing beyound all or a devistating curse.

I would like input and opinions from AO users. I have been considering this for two years now for my servers seeing that harvesters and spammers tend to proliferate in the unresolvable blocks.

Any input on this issue is greatly appreciated. Thank you in advance.