[Plugin: SendPress] Links in emails lead to 403 Forbidden Page

My first e-mail newsletter sent out without problems. However, the links in the newsletter link back to a 403 Forbidden error page. This includes the “Facebook” link at the bottom as well as any links to articles I added into the text field. I’ve triple checked all of the links themselves and the url’s are all complete and correct.

Here is the URL for one of the error messages-

http://sustaininghealthacupuncture.com/?sendpress=link&fxti=152d80aa15238e9&spreport=273&spurl=http%3A%2F%2Fwell.blogs.nytimes.com%2F2012%2F09%2F11%2Facupuncture-provides-true-pain-relief-in-study%2F

The link that leads there is supposed to go to the link that leads to this is supposed to go to-

http://well.blogs.nytimes.com/2012/09/11/acupuncture-provides-true-pain-relief-in-study/

How can I fix this?

http://wordpress.org/extend/plugins/sendpress/