SSL is not relayed to the proxy with mod_proxy in RHEL6

Issue

• Environment: there is a client machine, two proxies and a server:

 client --> proxy1 --> proxy2 --> server

• If DNS lookup does not work on proxy1, client can relay "http" communication to proxy2 but not "https" communication.

• If name resolution does not work on proxy1, "https" communication is relayed to proxy2 and name resolution should be performed correctly on proxy2.

• Log:

[Tue Jun 05 17:19:39 2012] [error] [client x.x.x.x] proxy: DNS lookup failure for: <server> returned by <server>:443