私は問い合わせ、会員登録、受注メールも届きません。
管理者側、送信側とも、どちらにも届きません。


環境は

EC-CUBE
4.0.2
サーバーOS
Linux sv5.php.starfree.ne.jp 4.4.0-148-generic #174-Ubuntu SMP Tue May 7 12:20:14 UTC 2019 x86_64
DBサーバー
MySQL 5.7.18
WEBサーバー
Apache
PHP
7.2.6 (Core, date, libxml, openssl, pcre, sqlite3, zlib, bz2, calendar, ctype, curl, hash, fileinfo, filter, ftp, gettext, gmp, SPL, iconv, session, standard, posix, pspell, Reflection, Phar, shmop, SimpleXML, sockets, mbstring, sysvmsg, sysvsem, sysvshm, tokenizer, wddx, xml, zip, cgi-fcgi, apcu, bcmath, dba, dom, gd, imagick, imap, intl, json, ldap, exif, mcrypt, mysqli, PDO, pdo_mysql, pdo_pgsql, pdo_sqlite, pgsql, soap, xmlreader, xmlrpc, xmlwriter, xsl, Zend OPcache)
User Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36


ネット上で検索して、

https://umebius.com/eccube/eccube4-cant-send-email-env-config/

https://bistro.site/?p=1755

https://www.web-f.net/2017/06/ec-cubesmtp.html

https://qiita.com/tDash/items/10ae233d08e17622b660

http://amidaike.hatenablog.com/entry/2015/09/15/143515



上記のページを参考にサーバーディレクトリ直下の.envのMAILER_URL部分を下記のように編集しました。
（●とパスワードの部分は個人情報なので伏せています）



# This file is a "template" of which env vars needs to be defined in your configuration or in an .env file
# Set variables here that may be different on each deployment target of the app, e.g. development, staging, production.
# https://symfony.com/doc/current/best_practices/configuration.html#infrastructure-related-configuration

###> symfony/framework-bundle ###
APP_ENV=prod
APP_DEBUG=0
#TRUSTED_PROXIES=127.0.0.1,127.0.0.2
#TRUSTED_HOSTS=localhost,example.com
###< symfony/framework-bundle ###

###> doctrine/doctrine-bundle ###
# Format described at http://docs.doctrine-project.org/projects/doctrine-dbal/en/latest/reference/configuration.html#connecting-using-a-url
# For a sqlite database, use: "sqlite:///%kernel.project_dir%/var/data.db"
# Set "serverVersion" to your server version to avoid edge-case exceptions and extra database calls
DATABASE_URL=mysql://●●●:パスワード@mysql1.php.starfree.ne.jp/●●●_eccube
# The version of your database engine
DATABASE_SERVER_VERSION=5.7.18
###< doctrine/doctrine-bundle ###

###> symfony/swiftmailer-bundle ###
# For Gmail as a transport, use: "gmail://username:password@localhost"
# For a generic SMTP server, use: "smtp://localhost:25?encryption=&auth_mode="
# Delivery is disabled by default via "null://localhost"
MAILER_URL=smtp://●●●@gmail.com:パスワード@smtp.gmail.com:587?auth_mode=plain
###< symfony/swiftmailer-bundle ###

###> APPLICATION CONFIG ###
# EC-CUBE Configs. The default value is defined in app/config/packages/eccube.yaml.
# Please remove commented out and enable it if you want to change.

#ECCUBE_LOCALE=ja
#ECCUBE_TIMEZONE=Asia/Tokyo
#ECCUBE_CURRENCY=JPY
#ECCUBE_ADMIN_ROUTE=admin
#ECCUBE_USER_DATA_ROUTE=user_data
#ECCUBE_ADMIN_ALLOW_HOSTS=[]
#ECCUBE_FORCE_SSL=false
#ECCUBE_TEMPLATE_CODE=default
#ECCUBE_AUTH_MAGIC=<change.me>
#ECCUBE_COOKIE_NAME=eccube
#ECCUBE_COOKIE_PATH=/
#ECCUBE_COOKIE_LIFETIME=0
#ECCUBE_GC_MAXLIFETIME=1440

###< APPLICATION CONFIG ###

ECCUBE_AUTH_MAGIC=mwEp42Nkr07cHjH9M9B1RPl6ZmJwxJMm
ECCUBE_ADMIN_ALLOW_HOSTS=[]
ECCUBE_FORCE_SSL=false
ECCUBE_ADMIN_ROUTE=t3t3
ECCUBE_COOKIE_PATH=/
ECCUBE_TEMPLATE_CODE=default
ECCUBE_LOCALE=ja