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If iRedAdmin returns “404 Not Found,” first open https://<your-server>/iredadmin/ with HTTPS and the trailing slash. On Nginx, the usual causes are that the request reaches the wrong server_name or that /etc/nginx/templates/iredadmin.tmpl is not loaded. On legacy Apache deployments, check the active SSL virtual host for the iRedAdmin WSGI and static-file mappings. A 500 response is a different problem and requires application-log and dependency checks.
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Start with the canonical URL
Before changing configuration, test the URL that iRedMail documents for iRedAdmin:
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https://<your-server>/iredadmin/Use the real mail-server hostname, HTTPS, and the final slash. The slash matters because the configured route and redirect commonly distinguish /iredadmin from /iredadmin/. iRedMail’s installation guidance explicitly says to use HTTPS instead of HTTP, and a maintainer-supported case was fixed simply by switching to HTTPS after a reboot.
- Do not test only
http://host/iredadmin; it can be handled by a different virtual host or redirect rule. - If HTTPS redirects to another hostname, test that final hostname too. The browser’s host must match an active virtual host.
- Capture the exact status code. A genuine 404 points to routing; a 500 points to the application or its Python dependencies.
What an iRedAdmin 404 usually means
A 404 means the web server that answered your request did not find a matching route for /iredadmin/. It does not, by itself, prove that the iRedAdmin files were deleted. On Nginx, the request may have landed in a default server block, a server block for another hostname, or a configuration that never included the iRedAdmin template. On Apache, another enabled site can win the SSL virtual-host selection, leaving the expected WSGI mapping unused.
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That distinction determines the repair: inspect the effective web-server configuration and the host selected for the request before reinstalling anything. Reinstalling iRedAdmin will not correct a hostname mismatch or an unloaded include file.
Record the deployment before editing it
Paths and service names vary by operating system and iRedMail release. Save a copy of the active configuration, then collect the facts a maintainer will need if the first checks do not resolve the error.
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cat /etc/iredmail-release- iRedMail release and operating-system distribution.
- Web server: Nginx or legacy Apache.
- Backend selected for iRedMail: LDAP, MySQL, or PostgreSQL.
- The exact URL and hostname typed in the browser.
- Recent changes to Nginx or Apache, certificates, DNS/hostname settings, or enabled sites.
Keep the original configuration available so you can restore it if a test change has an unexpected effect. Use the template and service names actually present on your system rather than copying a path from a different release.
Fixing a Nginx 404
1. Check which server block handles the hostname
Run Nginx’s configuration dump; it shows the complete, merged configuration rather than only one file you happen to have opened.
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nginx -TFind the HTTPS server block whose server_name matches the hostname in the browser. A common support case used a browser hostname that was not included after an administrator edited server_name; the request therefore went to another server block even though an iRedAdmin include existed elsewhere. The maintainer specifically noted that excluding localhost caused this result when localhost was the name being visited.
Check for these conditions in the dump:
- The browser hostname appears in the intended HTTPS
server_namedirective. - A competing default or catch-all HTTPS server is not taking precedence.
- The intended block contains the
/iredadmin/locations supplied by the iRedAdmin template. - The certificate and redirect configuration send the request to the same hostname you are testing.
While requesting the page, watch the Nginx access log and note the host header and status code. The log confirms whether the request is reaching the expected listener and whether the failure is consistently a 404.
2. Confirm that the iRedAdmin template is loaded
The usual Linux/OpenBSD template is:
/etc/nginx/templates/iredadmin.tmplIn a documented support case, the file existed but was not loaded by the active site, so Nginx had no route for /iredadmin/. In nginx -T, verify that the active HTTPS server includes this template (directly or through the distribution’s standard include structure). Do not assume that seeing the file on disk means Nginx is using it.
After correcting an include or related server-block edit, validate syntax before applying it:
nginx -tOnly after a successful test should you reload Nginx:
systemctl reload nginxUse the platform’s equivalent service command when the distribution does not use systemd. If the syntax test fails, fix that error first; do not reload a configuration that Nginx rejected.
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Request https://<your-server>/iredadmin/ while following the active Nginx access and error logs. A 404 with no attempt to reach an upstream application supports a routing diagnosis. The access entry should show the requested path, status, host header, and—where configured—the selected server context. An error mentioning a missing include, invalid directive, or failed reload means the running worker may still be using an older configuration.
If you changed the iRedAdmin base path
Changing /iredadmin to a custom URL requires a complete, consistent edit. The route is not controlled by one string. Update all of the following as one change:
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- The Nginx
locationpattern that matches the new path. - The rewrite or redirect that adds or removes the trailing slash.
- The uWSGI parameter
uwsgi_param SCRIPT_NAME. - The static-file alias pointing to iRedAdmin’s static directory.
- Any redirect from the old path to the new path.
A partial edit can make the application route unreachable, send a request to the old location, or load the page without its static assets. After making the set of changes, run nginx -t, reload Nginx, and test the exact new URL with HTTPS and its expected trailing-slash form. If you did not intentionally customize the path, restore the distribution template rather than creating an ad-hoc location.
Fixing a legacy Apache 404
Apache installations use a different repair path. The iRedMail mapping belongs in the active SSL virtual host, not merely in an unused or non-SSL site. The documented pattern contains both the WSGI application mapping and the static-file alias:
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Alias /iredadmin/static .../static/The ellipses above represent distribution- and release-specific directories; use the guide for your operating system and iRedMail release rather than guessing a filesystem path. Verify that the SSL virtual host serving your hostname contains the mappings and that the corresponding files exist at the configured locations.
Look for a competing enabled site
An Apache support case became functional after a conflicting site was disabled, the default SSL site was enabled, and Apache was reloaded. This is a virtual-host selection problem: the correct WSGI directives can be present in one file while another enabled SSL site answers the request first.
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- List or inspect the enabled SSL virtual hosts using your distribution’s Apache tools.
- Confirm that the hostname in the browser is declared by the virtual host containing the iRedAdmin directives.
- Disable only the conflicting site after preserving its configuration, then enable the intended SSL site if your distribution requires that step.
- Reload or restart Apache with the platform’s service command and test
https://<your-server>/iredadmin/again.
Review Apache access and error logs during the test. They show which virtual host and path handled the request and whether Apache could load the WSGI script or static alias.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Do not treat a 500 as a 404
A 404 means the request did not match the iRedAdmin route. A 500 means the route was reached but the application failed while handling it. Keep the diagnostics separate so you do not apply an application fix to a web-server routing problem.
When a documented 500 fix applies
One documented 500 showed this Python error:
ModuleNotFoundError: No module named 'web'For that specific dependency failure, the maintainer prescribed:
pip3 install -U web.py
service iredadmin restartUse this only after the response is confirmed as 500 and the application log contains the missing web module. A pure 404 with no application traceback should return you to virtual-host and template checks. Package versions, service names, and Python environments can differ by release, so confirm the command targets the iRedAdmin environment on your host.
An end-to-end recovery runbook
Use this order when you need a repeatable procedure rather than a single quick test.
- Preserve the current configuration. Copy the active Nginx or Apache site files and record the output of
cat /etc/iredmail-release. - Retest the canonical endpoint. Open
https://<your-server>/iredadmin/with the exact hostname configured on the server and the trailing slash. - Classify the response. Record whether it is 404, 500, a redirect loop, a certificate warning, or a page from an unexpected site.
- Identify the web server. Follow the Nginx path if Nginx is active; otherwise inspect Apache’s active SSL virtual host and logs.
- Inspect effective configuration. For Nginx, run
nginx -Tand verifyserver_name, template inclusion, and/iredadmin/locations. For Apache, verify the WSGI and static aliases in the SSL virtual host that matches the browser hostname. - Correct hostname or site precedence. Add the tested hostname to the intended Nginx
server_name, or disable the Apache site that is incorrectly winning selection, while retaining a backup of every change. - Restore or complete the route. Ensure the standard iRedAdmin template is included, or update every component if you intentionally changed the base path.
- Validate before reload. Run
nginx -tfor Nginx. For Apache, use the distribution’s configuration test if available. Apply the change only after validation succeeds. - Reload the correct service. Use
systemctl reload nginxfor Nginx or the appropriate Apache reload/restart command. - Verify from logs and browser. Request the HTTPS URL again and confirm the expected host, route, and status in access/error logs.
- Escalate with evidence. Provide the release, OS, backend, web server, exact URL, status code, relevant configuration excerpt, and log lines surrounding the request.
Choose the repair path by deployment
| Deployment detail | Primary checks | Typical correction |
|---|---|---|
| Nginx, standard path | HTTPS URL, matching server_name, loaded /etc/nginx/templates/iredadmin.tmpl |
Correct the host or include, run nginx -t, then reload Nginx |
| Nginx, custom base path | Location, rewrite, SCRIPT_NAME, static alias, and redirect agree |
Update the complete set, validate, reload, and test the new trailing-slash URL |
| Legacy Apache | Active SSL virtual host contains WSGI and static aliases; no competing site wins | Correct site enablement or mappings, then reload/restart Apache |
| Either server, 500 response | Application traceback and dependency state | Follow the specific log error; the documented web.py remedy applies only when that module is missing |
The iRedMail release, operating-system directory layout, selected web server, hostname, and whether iRedAdmin was selected during installation all affect which files are authoritative. If the endpoint was never selected during installation, confirm the installation choices and the release-specific layout before editing a web-server route.
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- Keep the canonical HTTPS hostname documented for administrators and bookmarks.
- When changing certificates or hostnames, verify that the browser hostname remains in the active virtual host’s
server_nameor ApacheServerName/ServerAliasdeclarations. - After every Nginx template or site edit, run
nginx -tand reload only after it passes. - Keep custom base-path changes in one reviewed configuration change; do not alter only the visible location string.
- After enabling or disabling Apache sites, test the SSL endpoint and inspect the logs to confirm the intended virtual host won.
- Record the iRedMail release and backend alongside configuration backups so future path differences are identifiable.
Bottom line
Test https://<your-server>/iredadmin/ first. If Nginx returns 404, prove that the hostname reaches the intended HTTPS server block and that /etc/nginx/templates/iredadmin.tmpl is loaded, then validate and reload the configuration. If Apache is in use, repair the active SSL virtual host’s WSGI/static mappings and remove conflicting site precedence. Reserve dependency repairs such as installing web.py for a confirmed 500 with the matching application traceback.
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