The following sites should work great with the information from your headers and also the spamvertised links.
The best place is Spamcop of course:
http://www.spamcop.net/bl.shtml
From there you you can click on the Senderbase link to check recent mail volumes:
http://www.senderbase.org/
Find out what other lists the IP is in:
http://www.moensted.dk/spam/
http://www.spamhaus.org/sbl/
http://spews.org/
http://www.all-nettools.com/toolbox
http://www.dnsstuff.com/
To check out other web sites hosted on the same server:
http://whois.webhosting.info/
http://www.completewhois.com/whois.htm (only shows 3 for unpaid users)
Some Great tools:
http://www.dnsstuff.com/
http://www.traceroute.org/
NANAS:
Public spam sightings:
http://groups-beta.google.com/group/news.a...net-abuse.email