Fixed mydestination format in postfix configuration.

2.Common_services/1.Postfix/main.cf

 # See /usr/share/postfix/main.cf.dist for a commented, more complete version
 
-
-# Debian specific:  Specifying a file name will cause the first
-# line of that file to be used as the name.  The Debian default
-# is /etc/mailname.
-#myorigin = /etc/mailname
-
 smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
 biff = no
 
@@ -30,7 +24,7 @@ alias_maps = hash:/etc/aliases
 alias_database = hash:/etc/aliases
 #virtual_maps = hash:/etc/postfix/virtual
 myorigin = /etc/mailname
-mydestination = {{ hostname }} localhost
+mydestination = {{ hostname }}, localdomain, localhost.localdomain, localhost
 relayhost = {{ smtp }}
 mynetworks = 127.0.0.0/8
 mailbox_size_limit = 0