diff --git a/valid-config.edn b/valid-config.edn
index 8ce8c47..4874c80 100644
--- a/valid-config.edn
+++ b/valid-config.edn
@@ -3,7 +3,7 @@
 :fqdn "test.de"
 :issuer "staging"
 :mailer-from "test@test.de"
-:mailer-host-port "123"
+:mailer-host-port "test.de:123"
 :service-whitelist-domains "test.de"
 :service-noreply-address "noreply@test.de"
  }