nginx reverse proxy and mailcow

dndhost

Hi, debian + docker + mailcow, all worked fine. On another server install nginx, configure as reverse proxy.
admin panel, sogo no problem, worked fine. Test rspamd web gui, on first look worked, go to scan/learn upload eml file - and something wrong, pop up messages abnormal.
Investigate log in nginx-mailcow and rspamd-mailcow
When working through nginx reverse proxy
172.22.1.11 - - [01/Dec/2024:18:22:14 +0300] “POST /pipe.php HTTP/1.1” 505 5 “-” “rspamd-3.10.2”
2024-12-01 18:22:14 #38(controller) <518394>; lua; metadata_exporter.lua:317: got unexpected http status: 505

when working direct connect
172.22.1.11 - - [01/Dec/2024:18:19:23 +0300] “POST /pushover.php HTTP/1.1” 200 5 “-” “rspamd-3.10.2”

completely different actions when working through a proxy and directly cause different events in the nginx and rspamd combination.

location / {
    proxy_read_timeout 86400s;
    proxy_send_timeout 86400s;
    proxy_set_header Connection '';
    chunked_transfer_encoding off;
    proxy_cache off;
    proxy_buffers 4 64k;
    proxy_busy_buffers_size 128k;
    proxy_buffer_size 64k;
    client_max_body_size 50M;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_pass http://192.168.101.250:8080;
}

Need help, please.

esackbauer

dndhost https://docs.mailcow.email/post_installation/reverse-proxy/r_p-nginx/
Your config looks different than what the docs say.

dndhost

esackbauer

Thanks for your answer.

I tried the recommended configuration, same result. Everything works except the same error in web rspamd.

and in recommended config nginx proxy installed on host with docker in my configuration. Proxy on different server.
This may be an error that occurs when interacting inside containers.

Maybe someone has the same configuration when the nginx proxy is on another server.
The saddest thing is that everything works without errors, I accidentally saw this strange behavior of rspamd gui.

dndhost

I researched the problem a little more.
The problem only occurs when working with the url mailserver.xxx/rspamd.
When working via proxy
172.22.1.11 - - [02/Dec/2024:13:16:09 +0300] “POST /pipe.php HTTP/1.1” 505 5 “-” “rspamd-3.10.2”

when working without a proxy, 172.22.1.11 - - [02/Dec/2024:13:11:16 +0300] “POST /pushover.php HTTP/1.1” 200 5 “-” “rspamd-3.10.2”

Thus, rspamd somehow understands, or vice versa, does not understand, and makes different requests to nginx-mailcow.