rack space hosting

Does rackspace hosting sell your e-mail to spamers?
My e-commerce company recently changed to rack space hosting. I have my own domain with them so my e-mail is myname@mycompany.com for the last few years I would get maybe 2-5 spam e-mails a day and I had no spam filter with the webmail service. Now that they have upgraded to rack space hosting a month ago the new mailbox has spam filters but its showing over a hundred spam e-mails a day!!! What changed. Could rack space be in cahoots with the spammers?
Nope.
Everyone is getting more spam these days.
Rackspace Hosting & AMD