To provide some extra information:
"This is the conf of nginx zammad
"## this is the nginx config for zammad
upstream zammad-railsserver {
server 127.0.0.1:3000;
}
upstream zammad-websocket {
server 127.0.0.1:6042;
}
server {
# replace ‘localhost’ with your fqdn if you want to use zammad from remote
server_name URI-of-zammad;
# security - prevent information disclosure about server version
server_tokens off;
root /opt/zammad/public;
access_log /var/log/nginx/zammad.access.log;
error_log /var/log/nginx/zammad.error.log;
client_max_body_size 50M;
location ~ ^/(assets/|robots.txt|humans.txt|favicon.ico|apple-touch-icon.png) {
expires max;
}
location /ws {
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection “Upgrade”;
proxy_set_header CLIENT_IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_read_timeout 86400;
proxy_pass http:// zammad-websocket # (intentionally added extra space, because zammad community allows only one link per post);
}
location / {
proxy_set_header Host $http_host;
proxy_set_header CLIENT_IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
# Change this line in an SSO setup
proxy_set_header X-Forwarded-User “”;
proxy_read_timeout 300;
proxy_pass http:// zammad-railserver # (intentionally added an extra space because zammad community allows only one link per post);
gzip on;
gzip_types text/plain text/xml text/css image/svg+xml application/javascript application/x-javascript application/json application/xml;
gzip_proxied any;
}
listen [::]:443 ssl ipv6only=on; # managed by Certbot
listen 443; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/URI-of-zammad/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/URI-of-zammad/privkey.pem; # managed by Certbot
include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
}
server {
if ($host = URI-of-zammad) {
return 301 https://$host$request_uri;
} # managed by Certbot
listen 80;
listen [::]:80;
server_name URI-of-zammad;
return 404; # managed by Certbot
}"
This is the zammad logs:
“==> /var/log/zammad/production.log <==
I, [2026-01-27T14:43:34.253030#2575545-196240] INFO – : Running job thread for ‘Process ticket escalations.’ (Ticket.process_escalation) status is: sleep
I, [2026-01-27T14:43:34.253089#2575545-196240] INFO – : Running job thread for ‘Check channels.’ (Channel.fetch) status is: sleep
I, [2026-01-27T14:43:34.253178#2575545-196240] INFO – : Running job thread for ‘Check ‘Channel’ streams.’ (Channel.stream) status is: sleep
I, [2026-01-27T14:43:34.254256#2575545-196240] INFO – : Running job thread for ‘Execute planned jobs.’ (Job.run) status is: sleep
I, [2026-01-27T14:43:34.277617#3508588-43435780] INFO – : Completed 200 OK in 25026ms (Views: 0.2ms | ActiveRecord: 1.3ms (10 queries, 5 cached) | GC: 7.5ms)
I, [2026-01-27T14:43:34.295399#3508588-43393620] INFO – : Started POST “/api/v1/message_receive” for 192.168.x.x at 2026-01-27 14:43:34 +0100
I, [2026-01-27T14:43:34.299849#3508588-43393620] INFO – : Processing by LongPollingController#message_receive as JSON
I, [2026-01-27T14:43:34.299902#3508588-43393620] INFO – : Parameters: {“client_id”=>“XXX”}
I, [2026-01-27T14:43:38.338094#2575545-5062600] INFO – : execute Channel.fetch (try_count 0)…
I, [2026-01-27T14:43:38.339146#2575545-5062600] INFO – : ended Channel.fetch took: 0.004884017 seconds.”
Nginx logs:
“2026/01/27 03:28:47 [error] 2937786#2937786: *416005 open() “/opt/zammad/public/robots.txt” failed (2: No such file or directory), client: 192.168.x.x, server: URI-of-zammad, request: “GET /robots.txt HTTP/1.1”, host: “URI-of-zammad”
2026/01/27 08:33:27 [error] 2937786#2937786: *417145 upstream prematurely closed connection while reading response header from upstream, client: 192.168.x.x, server: URI-of-zammad, request: “GET /ws HTTP/1.1”, upstream: “http:// 127.0.0.1:6042/ws # (intentionally added an extra space because zamamd community allows only one link per post)”, host: “URI-of-zammad”
2026/01/27 08:50:15 [error] 2937785#2937785: *417487 upstream prematurely closed connection while reading response header from upstream, client: 192.168.x.x, server: URI-of-zammad, request: “GET /ws HTTP/1.1”, upstream: “http:// 127.0.0.1:6042/ws # (intentionally added an extra space because zamamd community allows only one link per post)”, host: “URI-of-zammad”
2026/01/27 08:51:50 [error] 2937785#2937785: *417508 upstream prematurely closed connection while reading response header from upstream, client: 192.168.x.x, server: URI-of-zammad, request: “GET /ws HTTP/1.1”, upstream: “http:// 127.0.0.1:6042/ws # (intentionally added an extra space because zamamd community allows only one link per post)”, host: “URI-of-zammad”
2026/01/27 14:36:07 [error] 2937785#2937785: *421648 upstream prematurely closed connection while reading response header from upstream, client: 192.168.x.x, server: URI-of-zammad, request: “GET /ws HTTP/1.1”, upstream: “http:// 127.0.0.1:6042/ws # (intentionally added an extra space because zamamd community allows only one link per post)”, host: “URI-of-zammad”
2026/01/27 14:36:10 [error] 2937786#2937786: *421654 upstream prematurely closed connection while reading response header from upstream, client: 192.168.x.x, server: URI-of-zammad, request: “GET /ws HTTP/1.1”, upstream: “http:// 127.0.0.1:6042/ws # (intentionally added an extra space because zamamd community allows only one link per post)”, host: “URI-of-zammad”
2026/01/27 14:40:48 [error] 2937785#2937785: *421766 upstream prematurely closed connection while reading response header from upstream, client: 192.168.x.x, server: URI-of-zammad, request: “GET /ws HTTP/1.1”, upstream: “http:// 127.0.0.1:6042/ws # (intentionally added an extra space because zamamd community allows only one link per post)”, host: “URI-of-zammad”
2026/01/27 14:41:08 [error] 2937785#2937785: *421802 upstream prematurely closed connection while reading response header from upstream, client: 192.168.x.x, server: URI-of-zammad, request: “GET /ws HTTP/1.1”, upstream: “http:// 127.0.0.1:6042/ws # (intentionally added an extra space because zamamd community allows only one link per post)”, host: “URI-of-zammad””"
