diff --git a/HowtoPostfix.md b/HowtoPostfix.md
index 276c0fe9..9ab46cae 100644
--- a/HowtoPostfix.md
+++ b/HowtoPostfix.md
@@ -55,7 +55,7 @@ myhostname = hosting.example.com
 alias_maps = hash:/etc/aliases
 alias_database = hash:/etc/aliases
 myorigin = $myhostname
-mydestination = $myhostname localhost.localdomain localhost
+mydestination = $myhostname localhost.localdomain localhost localhost.$mydomain
 relayhost =
 mynetworks = 127.0.0.0/8
 mailbox_size_limit = 0