SSL_write errors

Hello Igor

We (Yahoo) are running a customized version of NGINX (based off 0.5.30),
and one of our customers is repeatedly getting such errors in his
nginx.log

2008/09/15 04:02:19 [info] 4822#0: *5983421 peer closed connection in
SSL handshake while sending client greeting line, client: 192.168.8.3,
server: 0.0.0.0:993
2008/09/15 04:02:22 [info] 4822#0: *5982475 proxied session done,
client: 65.96.130.215, server: 0.0.0.0:993, login: “[email protected]”,
upstream: 192.168.8.40:143
2008/09/15 04:02:22 [info] 4822#0: *5982475 SSL_write() failed (SSL:)
(32: Broken pipe) while proxying, client: 65.96.130.215, server:
0.0.0.0:993, login: “[email protected]”, upstream: 192.168.8.40:143

The SSL related configuration from nginx.conf is:

ssl_prefer_server_ciphers on;
ssl_ciphers ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;

Clients report frequent disconnects from NGINX proxy, and the upstream
server logs show that NGINX closed the connection to upstream.

Any help in this matter would be greatly appreciated.

Thank you
Mansoor P.