As the information in e-mail is so easily forged, complaints to the ISP from which the e-mail apparently comes will often be directed to the wrong people. Instead by using a service such as Spamcop, the headers can be checked so that the people who are really responsible can be contacted.
If you find that you are receiving a lot of spam with similar source/content you may want to report spam to Pulsant and get us to add an example to our spam filters. In order to do this please email [email protected] with the complete spam message AND full headers from this message.
To find out how to access email headers please see these articles.