diff --git a/hosts/server/configuration.nix b/hosts/server/configuration.nix
index 7b05a54..4130d3b 100644
--- a/hosts/server/configuration.nix
+++ b/hosts/server/configuration.nix
@@ -257,6 +257,10 @@
         $config['smtp_pass'] = "%p";
       '';
     };
+    postfix = {
+      relayHost = "mail.voorwaarts.nl";
+      relayPort = 587;
+    };
   };
 
   mailserver = {