Roundcube

Upgrade PHP 5.x to 7.x
 # yum -y install git yum-utils epel-release php-mysql roundcubemail
 # echo "create database roundcube character set utf8 collate utf8_bin" | mysql -uroot -p
 # echo "GRANT ALL ON roundcube.* TO roundcube@localhost IDENTIFIED BY 'p4ssw3rd'" | mysql -uroot -p
 # mysql -uroot -p roundcube < /usr/share/roundcubemail/SQL/mysql.initial.sql
 # cp -p /etc/httpd/conf.d/roundcubemail.conf /etc/httpd/conf.d/roundcubemail.conf.bak && \
   wget -O /etc/roundcubemail/config.inc.php http://www.qmailtoaster.org/rc.default.config && \
   wget -O /etc/httpd/conf.d/roundcubemail.conf http://www.qmailtoaster.org/rc.httpd.config
Change 'date.timezone' in '/etc/php.ini', e.g., date.timezone = "America/Denver"
 # systemctl restart httpd
Access https://my.roundcube.server/email
Add password support
Everyone should log out of roundcube before doing the next steps
Enable vpopmaild
 # wget -O /usr/share/roundcubemail/plugins/password/config.inc.php http://www.qmailtoaster.org/rc.password.config
Add to config file, run command in red:
 # [ "`grep \'password\', /etc/roundcubemail/config.inc.php`" = "" ] && \
   perl -ni -le 'BEGIN{ $q=chr(39), $pw="password" } print; print " $q$pw$q," if /$config.*'plugins'.*=.*array/' \
   /etc/roundcubemail/config.inc.php
Add Carddav
Everyone should log out of roundcube before doing the next steps
otherwise they'll have to clear their browser cache in order not
to get a database error. You may have to do this anyway.
 # cd /usr/share/roundcubemail/plugins
 # git clone https://github.com/blind-coder/rcmcarddav carddav
 # cd carddav
 # curl -sS https://getcomposer.org/installer | php
 # php composer.phar install
Add to config file, run command in red::
 # [ "`grep \'carddav\', /etc/roundcubemail/config.inc.php`" = "" ] && \
   perl -ni -le 'BEGIN{ $q=chr(39), $cd="carddav" } print; print " $q$cd$q," if /$config.*'plugins'.*=.*array/' \
   /etc/roundcubemail/config.inc.php

2-Factor Authentication
Roundcubemail <= 1.4.13 (RHEL7) php >= 7.4 Github
Roundcubemail > 1.4.13 (RHEL8) php >= 7.4 Github