<!--- Kill extra output. --->
<cfsilent>
 
	<!--- Param the URL id. --->
	<cfparam
		name="URL.id"
		type="string"
		default=""
		/>
 
 
	<!--- Try to decrypt it and create a text file. --->
	<cftry>
 
		<!--- Decrypt the value. --->
		<cfset URL.id = Decrypt(
			URL.id,
			"that-is-tasty!",
			"CFMX_COMPAT",
			"HEX"
			) />
 
		<!---
			Create the text file that will mark the form
			submission as valid. Just store it as an empty
			text file since all we are going to be doing
			is checking for its existence.
		--->
		<cffile
			action="write"
			file="#ExpandPath( './spam/#URL.id#.txt' )#"
			output=""
			/>
 
 
		<!--- Catch any errors. --->
		<cfcatch>
 
			<!--- Something went wrong. --->
 
		</cfcatch>
	</cftry>
 
 
	<!--- Return an empty image. --->
	<cfheader
		name="content-length"
		value="0"
		/>
 
	<cfcontent
		type="image/gif"
		reset="true"
		/>
 
</cfsilent>