Using zimbra reverse proxy to forward http to external host

Discuss your pilot or production implementation with other Zimbra admins or our engineers.
McGregor
Posts: 8
Joined: Wed Oct 25, 2017 5:09 pm

Using zimbra reverse proxy to forward http to external host

Postby McGregor » Wed Oct 25, 2017 5:24 pm

Hi, I'm running Zimbra 8.7.11_GA_1854 over Ubuntu 16.04.

I would like to take advantage of my zimbra server being on a VPS without port restriction to use it as a reverse proxy to forward traffic from http://my-domain.com to https://ip-address:443, the latter being a web server located elsewhere where port 80 is blocked. I thought that the ngix proxy server of zimbra would be best to achieve this but I have a challenge finding the right way to configure it.

Any advice?

Thank you.


milauria
Advanced member
Advanced member
Posts: 62
Joined: Mon Aug 15, 2016 12:32 pm

Re: Using zimbra reverse proxy to forward http to external host

Postby milauria » Thu Oct 26, 2017 2:47 am

If interested I did just the opposite ... with a webserver with nginx reverse proxy in front of Zimbra which is not directly exposed to external. I can pass you the .conf if you need it. cheers
McGregor
Posts: 8
Joined: Wed Oct 25, 2017 5:09 pm

Re: Using zimbra reverse proxy to forward http to external host

Postby McGregor » Thu Oct 26, 2017 11:16 am

Sure Milauria, I'm interested to see your .conf file. Which version of zimbra are you using?

thanks.
milauria
Advanced member
Advanced member
Posts: 62
Joined: Mon Aug 15, 2016 12:32 pm

Re: Using zimbra reverse proxy to forward http to external host

Postby milauria » Fri Oct 27, 2017 1:50 am

Hi see below my conf server location redirecting to LAN Zimbra server IP ... cheers

Code: Select all

server {
   server_name mail.mydomain.com ;
   location / {
      proxy_pass https://myzimbraIP:8443;           
      proxy_set_header      X-Real-IP $remote_addr;
      proxy_set_header      X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header      Host $http_host;
      proxy_read_timeout    90;
      proxy_connect_timeout 90;
      proxy_send_timeout        90;   
      proxy_buffer_size         16k;
      proxy_buffers        32   16k;
      proxy_busy_buffers_size   64k;
      client_body_buffer_size   128k;
      client_max_body_size  15m;
      }
}
McGregor
Posts: 8
Joined: Wed Oct 25, 2017 5:09 pm

Re: Using zimbra reverse proxy to forward http to external host

Postby McGregor » Fri Oct 27, 2017 11:13 am

Interesting! Although I guess you are not running zimbra 8.7 or above, as it mandatory instalsl and enables a ngix proxy. This is why I thought about reusing it to forward non-email traffic to another domain. Which version of zimbra are you running?

Thanks!
milauria
Advanced member
Advanced member
Posts: 62
Joined: Mon Aug 15, 2016 12:32 pm

Re: Using zimbra reverse proxy to forward http to external host

Postby milauria » Fri Oct 27, 2017 11:18 am

I am on latest 8.7.11. Zimbra has his own nginx proxy exanbled but it does not interfere, I read it's good to have it installed anyway also with memcache but it stays there on the zimbra server... maybe you can use it for what you want but me I preferred not to tweak the Zimbra install. The nginx I run for reverse proxy is totally independent on the other server.
McGregor
Posts: 8
Joined: Wed Oct 25, 2017 5:09 pm

Re: Using zimbra reverse proxy to forward http to external host

Postby McGregor » Fri Oct 27, 2017 11:34 am

Is your proxy forwarding traffic coming from any port including email ports? I'm not an expert with ngix but I only see a forward to https://...:8443.
milauria
Advanced member
Advanced member
Posts: 62
Joined: Mon Aug 15, 2016 12:32 pm

Re: Using zimbra reverse proxy to forward http to external host

Postby milauria » Fri Oct 27, 2017 11:41 am

You can do this, there are specific “mail” settings in nginx commands to do this. In my case i route incoming port 25 with the LAN router.
jhonatan1
Posts: 1
Joined: Fri Oct 27, 2017 1:29 pm

Re: Using zimbra reverse proxy to forward http to external host

Postby jhonatan1 » Fri Oct 27, 2017 1:53 pm

buenos dias tengo un problema con el zimbra es que yo mando correos me salen correctamente y no me rebotan pero nunca les llega a los destinatarios
me pueden colaborar por favor que tengo que hacer para solucionar esto gracias

Quedo Atento

Return to “Administrators”

Who is online

Users browsing this forum: No registered users and 26 guests