Dear all, The error message: 2017/01/05 18:28:49 [error] 32633#32633: *3 upstream prematurely closed connection while reading response header from upstream, client: xxx.xxx.xxx.xxx, server: server_hostname.domain.ltd, request: "POST /SOGo/connect HTTP/2.0", upstream: "https://ip_server:port_number/SOGo/connect", host: "server_hostname.domain.ltd:port_number", referrer: "https://server_hostname.domain.ltd:port_number/SOGo/" 2017/01/05 18:28:49 [error] 32633#32633: *3 upstream prematurely closed connection while reading response header from upstream, client: xxx.xxx.xxx.xxx, server: server_hostname.domain.ltd, request: "GET /SOGo.woa/WebServerResources/busy.gif HTTP/2.0", upstream: "https://ip_server:port_number/SOGo.woa/WebServerResources/busy.gif", host: "server_hostname.domain.ltd:port_number", referrer: "https://server_hostname.domain.ltd:port_number/SOGo/"
I have a front-end reverse proxy using Nginx for my web server and for the web interface of my email server using Sogo. >From my firewall: - If I NAT the "Sogo" port to my reverse-proxy I do have these error and a 502 Bad Gateway message. - If I bypass my reverse-proxy and NAT directly to my email server, this is working. On my reverse-proxy server, I am using Nginx version 1.9.10 (debian 8) On my email server, I am using Nginx version 1.6.2 (debian 8) If you need more information, please ask ... I do not understand this error myself. ps: it is the second time I am sending this email (?) -- Cordialement, Thierry e-mail : lenai...@maelenn.org PGP Key: 0xB7E3B9CD _______________________________________________ nginx mailing list nginx@nginx.org http://mailman.nginx.org/mailman/listinfo/nginx