Tools provided by Sam Spade
Dig tool, requests all the DNS records for a host or domain.
Finger tool, asks a server about one of its users.
Traceroute tool, finds the route packets take between you
and the selected address.
PING tool, sends a series of packets to the current address
and see if it's alive and how long it takes packets to make the round trip.
Whois tool, to contact network registries to find contact information for the current domain or IP address.
a DNS whois tool that perform forward and reverse DNS queries for the current address (this will usually give you the IP address of a hostname and the hostname of an IP address).
a multiple server
lookup tool for finding the owner of the block of domain or IP address.
SMTP Relay Verify (checking) tool, to find out whether a SMTP server is insecure--therefore allowing anyone to relay email through it. (Spammers relay email through third party mail server which obfuscasates message headers and harder to find the originator).
Information on this page
is derived from: Advanced DNS (dig) Help Topics
samspade.org a spam tracking freeware.