Reverse DNS is a site that displays reverse lookup results for approximately 4.3 billion IPv4 addresses in a map-like manner. This is what it looks like when you access the site. I can't tell what it ...

I am pretty dumb when it comes to DNS once it gets past forward DNS in BIND, and I need some pointers on how to fix this.<BR><BR>I have this one client who had /26 block of IPs that are owned by a ...

So there's this nice option in the SMTP virtual server: "Perform Reverse DNS Lookup on Incoming Messages". Many an admin has been fooled into thinking that this will drop SMTP connections from servers ...