[root@~]# setenforce 0

[root@~]# cd /etc/selinux
[root@~]# cat config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=permissive
# SELINUXTYPE= can take one of these three values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected. 
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

[root@~]# cat /etc/hosts
# Your system has configured 'manage_etc_hosts' as True.
# As a result, if you wish for changes to this file to persist
# then you will need to either
# a.) make changes to the master file in /etc/cloud/templates/hosts.redhat.tmpl
# b.) change or remove the value of 'manage_etc_hosts' in
#     /etc/cloud/cloud.cfg or cloud-config from user-data
# 
# The following lines are desirable for IPv4 capable hosts
127.0.0.1 mail.host
127.0.0.1 localhost.localdomain localhost
127.0.0.1 localhost4.localdomain4 localhost4

[root@~]# mkdir /home/user/installs
[root@~]# cd /home/user/installs
[root@~]# curl https://codeload.github.com/iredmail/iRedMail/tar.gz/1.2.1 -o iRedMail-1.2.1.tar.gz
[root@~]# tar -zxvf iRedMail-1.2.1.tar.gz
[root@~]# cd iRedMail-1.2.1
[root@~]# bash ./iRedMail.sh

* Storage base directory:               /var/vmail
* Mailboxes:                            
* Daily backup of SQL/LDAP databases:   
* Store mail accounts in:               MariaDB
* Web server:                           Nginx
* First mail domain name:               example.com
* Mail domain admin:                    postmaster@example.com
* Additional components:                Roundcubemail netdata iRedAdmin Fail2ban

********************************************************************
* Start iRedMail Configurations
********************************************************************
[ INFO ] Generate self-signed SSL cert (4096 bits, expire in 10 years).
[ INFO ] Generate Diffie Hellman Group with openssl, please wait.
[ INFO ] Create required system accounts.
[ INFO ] Configure Nginx web server.
[ INFO ] Configure PHP.
[ INFO ] Configure MariaDB database server.
[ INFO ] Setup daily cron job to backup SQL databases with /var/vmail/backup/backup_mysql.sh
[ INFO ] Configure Postfix (MTA).
[ INFO ] Configure Dovecot (POP3/IMAP/Managesieve/LMTP/LDA).
[ INFO ] Configure mlmmj (mailing list manager).
[ INFO ] Configure ClamAV (anti-virus toolkit).
[ INFO ] Configure Amavisd-new (interface between MTA and content checkers).
[ INFO ] Configure SpamAssassin (content-based spam filter).
[ INFO ] Configure iRedAPD (postfix policy daemon).
[ INFO ] Configure iRedAdmin (official web-based admin panel).
[ INFO ] Configure Roundcube webmail.
[ INFO ] Configure Fail2ban (authentication failure monitor).
[ INFO ] Configure netdata (system and application monitor).

*************************************************************************
* iRedMail-1.2.1 installation and configuration complete.
*************************************************************************

[ INFO ] Disable SELinux in /etc/selinux/config.
< Question > Would you like to use firewall rules provided by iRedMail?
< Question > File: /etc/firewalld/zones/iredmail.xml, with SSHD ports: 22. [Y|n]Y
[ INFO ] Copy firewall sample rules.
< Question > Restart firewall now (with ssh ports: 22)? [y|N]y
[ INFO ] Restarting firewall ...
< Question > Would you like to use MySQL configuration file shipped within iRedMail now?
< Question > File: /etc/my.cnf. [Y|n]Y
[ INFO ] Copy MySQL sample file: /etc/my.cnf.
[ INFO ] Enable SSL support for MySQL server.
[ INFO ] Updating ClamAV database (freshclam), please wait ...

********************************************************************
* URLs of installed web applications:
*
* - Roundcube webmail: https://mail.example.com/mail/
* - netdata (monitor): https://mail.example.com/netdata/
*
* - Web admin panel (iRedAdmin): https://mail.example.com/iredadmin/
*
* You can login to above links with below credential:
*
* - Username: postmaster@example.com
* - Password: admin+password
*
*
********************************************************************
* Congratulations, mail server setup completed successfully. Please
* read below file for more information:
*
*   - /home/user/installs/iRedMail-1.2.1/iRedMail.tips
*
* And it's sent to your mail account postmaster@example.com.
*
********************* WARNING **************************************
*
* Please reboot your system to enable all mail services.
*
********************************************************************

[root@~]# reboot

[root@~]# cat /etc/amavisd/amavisd.conf|grep "@bypass_virus"
@bypass_virus_checks_maps = (1);
[root@~]# systemctl stop clamd@amavisd
[root@~]# systemctl disable clamd@amavisd