cfhttp tag breaks with encoding

cfhttp tag breaks with encoding

I am using the cfhttp tag for a form post to zoho support. The url to send back to is encoded like this:  

"http://www........" and so on.    This #x3a;  (pound sign) breaks the cfhttp tag  even when I escape the 
# as ##x3a;

I have tried everything I can think of to submit the cfhttp tag. Without encoding, with it, escaping it. It just won't work.

Has anyone else run into this?