[app/config/eccube/mail.yml]
■変更前————————————
mail:
transport: mail
host:
port:
username:
password:
encryption: null
auth_mode: null
charset_iso_2022_jp: false
■変更後————————————
transport: smtp
host: xxxxx.sakura.ne.jp
port: 587
username: xxxxx@xxxxx.sakura.ne.jp
password: xxxxx
encryption: null
auth_mode: null
charset_iso_2022_jp: false
use_spool: true