I made two changes to your code.
Here's the new code with the two changes...
<cfhttp url="
http://localhost/receive.cfm"
method="post" redirect="yes">
<cfhttpparam name="SessionID" value="#SessionID#"
type="FormField">
<cfhttpparam name="Amount" value="#Amount#"
type="FormField">
</cfhttp>
<cfoutput>#cfhttp.fileContent#</cfoutput>
Perhaps there was confusion about how the redirect attribute
works?
Or perhaps I miss-understood what you are trying to achieve.
My interpretation of what you wanted was to allow the page
doing the posting
to be redirected vs allowing the page receiving the post to
be redirected.
I think the redirect attribute allows the page receiving the
post to be redirected?
Good luck!