# Problem with SiteURL **URL:** \ **Category:** Uncategorized\ **Created:** [June 16, 2025, 5:01pm UTC](https://forum.mattermost.com/t/problem-with-siteurl/23396 "2025-06-16T17:01:34Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Joe\_M](https://avatars.discourse-cdn.com/v4/letter/j/b5e925/32.png) [@Joe\_M](https://forum.mattermost.com/u/Joe_M)\ **Post date:** [June 16, 2025, 5:01pm UTC](https://forum.mattermost.com/t/problem-with-siteurl/23396/1 "2025-06-16T17:01:34Z")
Hi - I’ve installed mattermost on my ubuntu 22, configured nginx as a reverse proxy, added a fqdn and users can register and connect from it. My problem is that I can’t configure the SiteURL, it keeps failing and I can’t figure out exactly what the problem is. ---
**Author:** ![john.oliver](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mattermost.com/john.oliver/32/6436_2.png) [@john.oliver](https://forum.mattermost.com/u/john.oliver)\ **Post date:** [June 17, 2025, 3:56pm UTC](https://forum.mattermost.com/t/problem-with-siteurl/23396/2 "2025-06-17T15:56:13Z")
What do you mean by “I can’t configure the SiteURL, it keeps failing”? ---
**Author:** ![rtfm98](https://avatars.discourse-cdn.com/v4/letter/r/d9b06d/32.png) [@rtfm98](https://forum.mattermost.com/u/rtfm98)\ **Post date:** [June 17, 2025, 7:43pm UTC](https://forum.mattermost.com/t/problem-with-siteurl/23396/3 "2025-06-17T19:43:37Z")
Could you post the first config section of your `config.json` that contains the `SiteURL` option? ---
**Author:** ![Joe\_M](https://avatars.discourse-cdn.com/v4/letter/j/b5e925/32.png) [@Joe\_M](https://forum.mattermost.com/u/Joe_M)\ **Post date:** [June 17, 2025, 8:45pm UTC](https://forum.mattermost.com/t/problem-with-siteurl/23396/4 "2025-06-17T20:45:12Z")
I did the configuration in a lab and everything worked fine by adding a dummy domain in /etc/host. Now I’m in production I’ve finished the configuration with a fqdn this time but when I run the SiteURL test it’s invalid. I’ve looked at the mattermost server logs and I don’t have any errors, only warnings. ---
**Author:** ![Joe\_M](https://avatars.discourse-cdn.com/v4/letter/j/b5e925/32.png) [@Joe\_M](https://forum.mattermost.com/u/Joe_M)\ **Post date:** [June 17, 2025, 9:01pm UTC](https://forum.mattermost.com/t/problem-with-siteurl/23396/5 "2025-06-17T21:01:30Z")
I use nginx as a reverse proxy which receives requests on port 80 and redirects them to 443 before sending them to the mattermost backend. Here’s the beginning of the configuration in my config.json file ![Capture d’écran du 2025-06-17 21-58-30](https://us1.discourse-cdn.com/flex020/uploads/mattermost/original/2X/f/f032ba32617e75a2de00f70e51386741e1fd805c.png) ---
**Author:** ![Joe\_M](https://avatars.discourse-cdn.com/v4/letter/j/b5e925/32.png) [@Joe\_M](https://forum.mattermost.com/u/Joe_M)\ **Post date:** [June 17, 2025, 9:02pm UTC](https://forum.mattermost.com/t/problem-with-siteurl/23396/6 "2025-06-17T21:02:51Z")
Yes thanks for the help ![Capture d’écran du 2025-06-17 21-58-30](https://us1.discourse-cdn.com/flex020/uploads/mattermost/original/2X/f/f032ba32617e75a2de00f70e51386741e1fd805c.png) ---
**Author:** ![rtfm98](https://avatars.discourse-cdn.com/v4/letter/r/d9b06d/32.png) [@rtfm98](https://forum.mattermost.com/u/rtfm98)\ **Post date:** [June 17, 2025, 9:14pm UTC](https://forum.mattermost.com/t/problem-with-siteurl/23396/7 "2025-06-17T21:14:39Z")
> [@Joe\_M](#): > > but when I run the SiteURL test it’s invalid What do you mean by that? What “SiteURL test”? And “invalid” in what matter? I was able to open the url and see the login screen without any errors. ---
**Author:** ![john.oliver](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mattermost.com/john.oliver/32/6436_2.png) [@john.oliver](https://forum.mattermost.com/u/john.oliver)\ **Post date:** [June 17, 2025, 9:27pm UTC](https://forum.mattermost.com/t/problem-with-siteurl/23396/8 "2025-06-17T21:27:03Z")
How is your nginx proxy talking to Mattermost? You may need to set the SiteURL to match that. ---
**Author:** ![Joe\_M](https://avatars.discourse-cdn.com/v4/letter/j/b5e925/32.png) [@Joe\_M](https://forum.mattermost.com/u/Joe_M)\ **Post date:** [June 21, 2025, 12:41am UTC](https://forum.mattermost.com/t/problem-with-siteurl/23396/9 "2025-06-21T00:41:44Z")
Thank you for your help, it worked!!