I'm not at a point where I can do a lot of testing right now, but there are a couple of things you can try. 
 
Your 
-A FORWARD -j REJECT  
line probably isn't doing anything without NAT, but you might comment that out or set your action to ACCEPT and reload the firewall to see if it makes a difference. 
 
It also looks like you're logging rejected requests.  You could try logging in to the server and then grepping your logs for 'iptables denied'. 
		
	
		
		
		
		
		
		
		
		
		
	
		
		
	
	
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