Mass email newshot

[PokerMan]

Hi guys

Can anyone tell me the best way to implement a mass email newshot, to
1million plus people!

I have done this:

1) Set up a news email account on my server
2) Set that email as the email for the news shot
3) Used smtp client of asp to make the email
4) Loop through a paged sql server stored proc to retrieve the data in a
datareader (for performance)
5) Using the paged amounts of 100k a time, then loop through, get email and
add to emailer message.add(destEmail), and then send

What is the best way? And wont this methood cause MASS spam of any bounced
emails back to my server??

Thanks