For the site http://www.sierrastarcasino.com/ I find the following servers:
pdns1.ultradns.net:
204.74.108.1
pdns2.ultradns.net:
204.74.109.1
pdns3.ultradns.org:
199.7.68.1
pdns4.ultradns.org:
199.7.69.1
pdns5.ultradns.info:
204.74.114.1
pdns6.ultradns.co.uk:
When I cross reference this with my own archives I find:
PDNS1.ULTRADNS.NET 204.74.108.1
PDNS3.ULTRADNS.ORG 199.7.68.1
PDNS2.ULTRADNS.NET 204.74.109.1
PDNS6.ULTRADNS.CO.UK
PDNS4.ULTRADNS.ORG 199.7.69.1
PDNS5.ULTRADNS.INFO 204.74.114.1
Would anybody agree this linkage provides proof the spam is coming from these servers for the domain mentioned. Because if it is you will not believe who is doing this.
greek39