diff --git a/lib/configfiles/jessie.xml b/lib/configfiles/jessie.xml
index b2aac784..ce223da0 100644
--- a/lib/configfiles/jessie.xml
+++ b/lib/configfiles/jessie.xml
@@ -1122,7 +1122,7 @@ data_directory = /var/lib/postfix
 # from gethostname(). $myhostname is used as a default value for many
 # other configuration parameters.
 #
-myhostname = mail.$mydomain
+myhostname = $mydomain
 #myhostname = virtual.domain.tld
 
 # The mydomain parameter specifies the local internet domain name.