reset tls certs

docs/debug-reset-tls.md

@@ -0,0 +1,17 @@
+In case you encounter problems with your certificate, key or Let's Encrypt account, please try to reset the TLS assets:
+
+```
+source mailcow.conf
+docker-compose down
+rm -rf data/assets/ssl
+mkdir data/assets/ssl
+openssl req -x509 -newkey rsa:4096 -keyout data/assets/ssl-example/key.pem -out data/assets/ssl-example/cert.pem -days 365 -subj "/C=DE/ST=NRW/L=Willich/O=mailcow/OU=mailcow/CN=${MAILCOW_HOSTNAME}" -sha256 -nodes
+cp -n -d data/assets/ssl-example/*.pem data/assets/ssl/
+docker-compose up -d
+```
+
+This will stop mailcow, source the variables we need, create a self-signed certificate and start mailcow.
+
+If you use Let's Encrypt you should be careful as you will create a new account and a new set of certificates. You will run into a ratelimit sooner or later.
+
+Please also note that previous TLSA records will be invalid.

mkdocs.yml

@@ -54,6 +54,7 @@ nav:
   - 'Remove Persistent Data': 'debug-rm_volumes.md'
   - 'Common Problems': 'debug-common_problems.md'
   - 'Admin login to SOGo': 'debug-admin_login_sogo.md'
+  - 'Reset TLS certificates'': 'debug-reset-tls.md'
 - 'Backup & Restore':
   - 'Helper script':
     - 'Backup': 'b_n_r_backup.md'