I'm trying to keep an old apache install limping along for a few more months by letting nginx handle the SSL connection between site visitors and apache.

I have a pretty simple config on the nginx side for the proxy_pass config;

location / {
proxy_pass https://foo.i.example.com;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_send_timeout 360;
proxy_read_timeout 360;
}

I see the request hit the apache side, and with some debugging enabled, I'm able to get some detail:

[Fri Apr 24 01:21:48 2015] [info] Initial (No.1) HTTPS request received for child 6 (server signup.biglist.com:443)
[Fri Apr 24 01:21:48 2015] [debug] ssl_engine_kernel.c(400): [client 10.99.88.59] Reconfigured cipher suite will force renegotiation
[Fri Apr 24 01:21:48 2015] [info] [client 10.99.88.59] Requesting connection re-negotiation
[Fri Apr 24 01:21:48 2015] [debug] ssl_engine_kernel.c(750): [client 10.99.88.59] Performing full renegotiation: complete handshake protocol (client does support secure renegotiation)
[Fri Apr 24 01:21:48 2015] [info] [client 10.99.88.59] Awaiting re-negotiation handshake
[Fri Apr 24 01:22:18 2015] [error] [client 10.99.88.59] Re-negotiation handshake failed: Not accepted by client!?

This is nginx 1.6.2, OpenSSL 1.0.1m and Apache 2.2.25, OpenSSL 0.9.8y

Relevant apache config:

SSLEngine On
SSLVerifyClient none (tried with and without this)
SSLInsecureRenegotiation off (tried with and without this)
SSLStrictSNIVHostCheck off (tried with and without this)
SSLProtocol ALL -SSLv2
SSLCipherSuite ALL:!ADH:!EXP:!LOW:!RC2:!3DES:!SEED:!RC4:+HIGH:+MEDIUM

I've also tried forcing a TLSv1 and a single cipher on the nginx side, thinking that might somehow simplify things, but no difference.

Any ideas?