make dovecot running on localhost the default method for this role

defaults/main.yml

@@ -1,10 +1,11 @@
 mailname: "{{inventory_hostname}}"
 
-postfix_method: false
+postfix_method: postfixadmin
 
 postfix_smtp_service: true
 postfix_submission_service: false
 
+postfix_postfixadmin_mysql_host: localhost
 postfix_postfixadmin_mysql_database: postfixadmin
 postfix_postfixadmin_mysql_username: postfix
 
@@ -14,7 +15,7 @@ postfix_check_spamhaus: false
 postfix_with_opendkim: false
 postfix_with_opendmarc: false
 
-postfix_virtual_transport: virtual # lmtp:unix:private/dovecot-lmtp
+postfix_virtual_transport: lmtp:unix:private/dovecot-lmtp
 
 postfix_submission_service_smtpd_sasl_path: private/auth
 

tasks/postfixadmin.yml

@@ -8,7 +8,7 @@
 
 - name: postfix sql map directory
   file:
-    path: /etc/postfix/sql/
+    path: /etc/postfix/postfixadmin-sql/
     state: directory
     mode: u=rwx,g=rx,o=
     group: postfix
@@ -34,6 +34,6 @@
     name: "{{postfix_postfixadmin_mysql_username}}"
     password: "{{postfix_postfixadmin_mysql_password}}"
     priv: "{{postfix_postfixadmin_mysql_database}}.*:SELECT"
-    host: "{{host_ip}}"
+    host: "{{postfix_postfixadmin_mysql_host}}"
     state: present
-  delegate_to: "{{postfix_postfixadmin_mysql_host}}"
+  delegate_to: "{{(postfix_postfixadmin_mysql_host=='localhost')|ternary(inventory_hostname,postfix_postfixadmin_mysql_host)}}"