diff --git a/conf/production.yaml b/conf/production.yaml
index e71689e..120e249 100644
--- a/conf/production.yaml
+++ b/conf/production.yaml
@@ -31,7 +31,7 @@ redis:
 
 # SMTP server to send emails
 smtp:
-  hostname: null
+  hostname: 'localhost'
   port: 465
   username: null
   password: null