[exim-dev] [Bug 1394] Proxy Protocol Support

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Author: Todd Lyons
Date:  
To: exim-dev
Old-Topics: [exim-dev] [Bug 1394] New: Proxy Protocol Support
Subject: [exim-dev] [Bug 1394] Proxy Protocol Support
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http://bugs.exim.org/show_bug.cgi?id=1394

Todd Lyons <tlyons@???> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |





--- Comment #12 from Todd Lyons <tlyons@???> 2014-04-25 18:13:08 ---
There are two parts to addressing the question:

1) It's documented that the per host connection limit must be raised:

Runtime issues to be aware of:
   - Since the real connections are all coming from your proxy, and the
     per host connection tracking is done before Proxy Protocol is
     evaluated, smtp_accept_max_per_host must be set high enough to
     handle all of the parallel volume you expect per inbound proxy.


However, this would then leave the proxy configured exim server susceptible to
excessive connections from a single host. So I'm going to...

2) Add a configuration option proxy_accept_max_per_host which will be the same
code/structure as smtp_accept_max_per_host, but enforced after a successful
proxy header negotiation.


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