diff --git a/config/domains.example.txt b/config/domains.example.txt
new file mode 100644
index 0000000..46a1f9c
--- /dev/null
+++ b/config/domains.example.txt
@@ -0,0 +1,4 @@
+# host or host:port
+example.domain
+mail.example.domain:443
+status.example.domain