add reworked caddy configs from current setup

.old/etc/caddy/sites-enabled/mailserver

@@ -0,0 +1,19 @@
+# caddy won't actually handle mail (in terms of reverse proxy, etc), it's simply here so caddy can generate certificates for us
+# that will be reused for the mailserver
+# we use a daily cronjob to copy the certificates to the proper location because by default they're stored somewhere else
+# that literally Nobody (except root) but caddy can access
+mx1.synth.download {
+    # Optional, can be useful for troubleshooting
+    # connection to Caddy with correct certificate:
+    respond "Hello DMS"
+}
+
+# mta-sts stuff
+mta-sts.synth.download {
+    root * /var/www/mta-sts
+    file_server
+
+    import common-settings
+    import log mta-sts
+    import robots-txt
+}