The most pathetic spammers (oops, all spammers are pathetic) will send out bulk mailings with every possible name combination to a domain, for example,
[email protected]. So there really is no "list" for you to be removed from. The best way to combat this is to pick a name that is a combination of letters and numbers that would not show up in any "dictionary" of names, etc. such as
[email protected].
P.S. this is just a theory on my part. I don't spam or do a lot of research on spam techniques, so I don't know this to be a cold hard fact, but rather a well-educated guess as I am a network/security consultant for several companies.