I'd like to use HTTP_REFERER to be sure my goodies page is being called from Paypal after a successful transaction, and not by someone who just entered it into a browser. I was thinking of something likeIf Request.ServerVariables("HTTP_REFERER") <> [PayPal page] Then 'redirect to error page Else 'allow page to proceed End IfBut I'm seeing a blank in HTTP_REFERER and this from http://www.w3schools.com/asp/coll_servervariables.asp suggests why:
HTTP_REFERER returns a string containing the URL of the
page that referred the request to the current page using an <a> tag.
If the page is redirected, HTTP_REFERER is empty.So how can I tell who's redirecting to me?Thanks for any help.Steve
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