external mysql server config

defaults/main.yml

@@ -1,3 +1,2 @@
 postfix_postfixadmin_mysql_database: postfixadmin
 postfix_postfixadmin_mysql_username: postfix
-postfix_postfixadmin_mysql_password: eiVa9aloex5fiayeepheequ7

tasks/postfixadmin.yml

@@ -28,3 +28,4 @@
     password: "{{postfix_postfixadmin_mysql_password}}"
     priv: "{{postfix_postfixadmin_mysql_database}}.*:SELECT"
     state: present
+  delegate_to: "{{postfix_postfixadmin_mysql_host}}"

vars/main.yml

@@ -1 +0,0 @@
-postfix_postfixadmin_mysql_host: localhost