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http://bugs.exim.org/show_bug.cgi?id=1394




--- Comment #5 from Mike Cardwell <[email protected]>  2013-10-09 
15:33:38 ---
(In reply to comment #4)

> Is the protocol secure against a spammer pretending to proxy any IP of his
> choice?

The protocol isn't no. Hence why you specify which IP addresses to trust in the
"proxy_protocol_hosts" configuration option. When using Amazons ELB or any
other HA-Proxy based system, you'd trust the IP addresses of the load balancers
and no others, to declare Proxy Protocol addresses.


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