Solved portfolio bug, entered keycloak entries for portfolio, added hints to phpmyadmin and updated mailu documentary

roles/docker-mailu/Administration.md

@@ -32,13 +32,6 @@ To resend queued mails, use this command:
 docker-compose exec -it smtp postqueue -f
 ```
 
-# Testing 🧪
-
-Use the following tools for testing:
-
-- [SSL-Tools Mailserver Test](https://de.ssl-tools.net/mailservers/)
-- [TestEmail.de](http://testemail.de/)
-
 # Updates 🔄
 
 For instructions on updating your Mailu setup, follow the official [Mailu maintenance guide](https://mailu.io/master/maintain.html).

roles/docker-mailu/Testing.md

@@ -0,0 +1,6 @@
+# Test Server Instance
+
+Use the following tools to test your server instance:
+
+- [SSL-Tools Mailserver Test](https://de.ssl-tools.net/mailservers/)
+- [TestEmail.de](http://testemail.de/)

roles/docker-mailu/User_Administration.md

@@ -0,0 +1,108 @@
+# User Administration
+
+## Promoting an OIDC User to Admin 🧑‍💼
+
+If your administrator logs in via OpenID Connect (OIDC) and you don't want to create a separate local user, you can promote the existing OIDC-authenticated user to a global admin directly in the Mailu database using the CLI.
+
+Follow these steps:
+
+1. Enter the Mailu `admin` container shell:
+
+   ```bash
+   docker exec -it mailu-admin-1 flask shell
+   ```
+
+2. Inside the interactive shell, run the following commands:
+
+   ```python
+   from mailu import models, db
+   user = models.User.query.filter_by(email='admin@example.com').first()
+   user.global_admin = True
+   db.session.commit()
+   ```
+
+   Replace `admin@example.com` with the OIDC email address used to log in.
+
+3. Exit the shell:
+
+   ```python
+   exit()
+   ```
+
+Your OIDC-authenticated user is now a full **global admin** and has access to all administrative functions in the Mailu interface.
+
+> 💡 Tip: This method is useful when you're using federated login and want to avoid managing separate local admin credentials.
+
+
+Klar! Hier ist die Anleitung zur Änderung der primären Domain eines Mailu-Benutzers, speziell für **MariaDB** als Datenbank-Backend, auf **Englisch** und im gleichen Stil wie deine Doku:
+
+---
+
+## Changing the Primary Domain of a Mailu Account (MariaDB) 🌐
+
+Mailu links user accounts to specific domains, so changing a user's primary domain cannot be done via the admin interface. You need to update it manually via the database.
+
+> ⚠️ **Warning:** Always back up your database before performing manual operations.
+
+### Steps for MariaDB:
+
+1. Connect to the Mailu MariaDB container:
+
+   ```bash
+   docker compose exec -it database mariadb -u mailu -p
+   ```
+
+   Enter the password when prompted (you can find it in your `docker-compose.yml` or `.env` file).
+
+2. Select the Mailu database (usually named `mailu`):
+
+   ```sql
+   USE mailu;
+   ```
+
+3. Update the user's domain and email:
+
+   ```sql
+   UPDATE user SET email='newname@newdomain.com', domain_name='newdomain.com' WHERE email='oldname@olddomain.com';
+   ```
+
+   If needed, also update the local part (username):
+
+   ```sql
+   UPDATE user SET localpart='newname' WHERE email='newname@newdomain.com';
+   ```
+
+4. If the new domain does not exist yet, insert it into the `domain` table:
+
+   ```sql
+   INSERT INTO domain (name, max_users, max_aliases, max_quota_bytes, comment, enabled)
+   VALUES ('newdomain.com', 100, 100, 10737418240, 'New domain', true);
+   ```
+
+5. If the user had aliases, update the `alias` table accordingly.
+
+---
+
+### Alternative: Recreate the User
+
+If you prefer not to modify the database manually:
+
+- Delete the old user via the admin UI
+- Create a new user under the desired domain
+- Migrate emails using IMAP tools (e.g. `imapsync`)
+
+---
+
+### Update DNS and Mailu Configuration
+
+Ensure that the new domain is correctly set up:
+
+- Add it to `HOSTNAMES` in your `docker-compose.yml`
+- Set up proper DNS records (MX, SPF, DKIM, DMARC)
+- If using Let's Encrypt (`TLS_FLAVOR=cert`), make sure the domain is included in `LETSENCRYPT_HOSTS`
+
+> 💡 **Tip:** Mailu must be aware of the domain both in its configuration and the database for mail routing and certificate issuance to work correctly.
+
+---
+
+Wenn du willst, kann ich dir das gleich in eine fertige Markdown-Datei oder ein Doku-Format einfügen.