Set mailname at the same time as hostname

src/freedombone-base-email

         return
     fi
 
-    echo "$DEFAULT_DOMAIN_NAME" > /etc/mailname
-
     apt-get -y remove postfix
     apt-get -y install exim4 sasl2-bin swaks libnet-ssleay-perl procmail xinetd
 

src/freedombone-utils-dns

 
     echo "$DEFAULT_DOMAIN_NAME" > /etc/hostname
     hostname $DEFAULT_DOMAIN_NAME
+    echo "$DEFAULT_DOMAIN_NAME" > /etc/mailname
 
     if grep -q "127.0.1.1" /etc/hosts; then
         sed -i "s/127.0.1.1.*/127.0.1.1       $DEFAULT_DOMAIN_NAME/g" /etc/hosts