feat: backup + mail stuff

roles/mail/files/nginx_default.conf

@@ -0,0 +1,26 @@
+server {
+
+    server_name mail.atlantishq.de autoconfig.atlantishq.de autodiscover.atlantishq.de autoconfig.potaris.de;
+    listen 443 ssl;
+    listen 80;
+    listen [::]:443 ssl;
+
+    location /.well-known/acme-challenge/ {
+        auth_basic off;
+        alias /var/www/.well-known/acme-challenge/;
+    }
+
+    location /initdb {
+        allow 127.0.0.1;
+        deny all;
+    }
+
+    location /{
+        proxy_set_header Host $host;
+        proxy_set_header X-Forwarded-Proto http;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_pass http://localhost:8080;
+    }
+
+}