All steps to setup webmail server roundcubemail-1.2.3 from CentOS 7 clean OS with DDNS domain name

From CentOS 7 clean minimum installation with mysql apache php postfix dovecot roundcubemail === rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm rpm -Uvh http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm yum update -y yum install mysql-community-server -y systemctl enable mysqld.service systemctl start mysqld.service cat /var/log/mysqld.log |grep "temporary password" [Please use your own password here. ] xxxxxxxxx 2AbfBlTGjQ-X mysql_secure_installation (all answer Yes) set a powerful password qWeeS34VfGbb-_-dEc-_-abab mysql -u root -p (qWeeS34VfGbb-_-dEc-_-abab) create database data; CREATE USER 'ggyy'@'localhost' IDENTIFIED BY 'AsWe34_-tYu-_pxXccD'; GRANT ALL PRIVILEGES ON *.* TO 'ggyy'@'localhost' WITH GRANT OPTION; FLUSH PRIVILEGES; exit === yum install httpd -y systemctl enable httpd.service systemctl start httpd.service systemctl disable firewalld systemctl stop firewalld === yum install nano -y nano /etc/sysconfig/selinux SELINUX=disabled === nano /etc/postfix/main.cf myhostname = jimmypan.dlinkddns.com mydomain = jimmypan.dlinkddns.com myorigin = $mydomain inet_interfaces = all mydestination = $mydomain, $myhostname, localhost.$mydomain, localhost mail_spool_directory = /var/mail === yum install dovecot -y nano /etc/dovecot/dovecot.conf protocols = imap nano /etc/dovecot/conf.d/10-mail.conf mail_location = mbox:~/mail:INBOX=/var/mail/%u mail_privileged_group = mail mail_access_groups = mail systemctl enable postfix.service systemctl start postfix.service systemctl enable dovecot.service systemctl start dovecot.service === roundcubemail-1.2.3 yum install wget -y cd /tmp && wget https://github.com/roundcube/roundcubemail/releases/download/1.2.3/roundcubemail-1.2.3-complete.tar.gz tar -xzvf roundcubemail-1.2.3-complete.tar.gz -C /var/www/html mv /var/www/html/roundcubemail-1.2.3/ /var/www/html/webmail chown -R apache:apache /var/www/html/webmail/* chown -R apache:apache /var/www/html/webmail/ (option : check apache user : egrep '^User|^Group' /etc/httpd/conf/httpd.conf ) === install php yum install php php-dom php-pdo php-mbstring php-mysql php-intl -y === time nano /etc/php.ini date.timezone = "Asia/Taipei" === init 6 (or Roundcube mail configuration file cannot save directly) (SELINUX=disabled will take effect here) === http://jimmypan.dlinkddns.com/webmail/installer === change default e-mail domain in roundcube nano /var/www/html/webmail/config/config.inc.php $config['mail_domain'] = '%n'; use %d if you got one extra default e-mail hostname systemctl restart httpd.service === add test user useradd test1 passwd test1 === http://jimmypan.dlinkddns.com/webmail === # remove installer folder rm -rf /var/www/html/webmail/installer === I am not a Linux expert (only a beginner). Please correct me if my command or anything is wrong. Thank you.