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Install iRedMail on FreeBSD inside Jail (with ezjail)

[TOC]

Summary

  • This tutorial describes how to create a FreeBSD Jail with ezjail, then install the latest iRedMail in Jail.
  • We use hostname mx.example.com and IP address 172.16.122.244 for our Jail server.

Notes:

  • This tutorial was tested with FreeBSD 9 and the latest ports tree, but it should work on FreeBSD 8 and 10 too.
  • All backends available in iRedMail (OpenLDAP, MySQL/MariaDB, PostgreSQL) were tested, work like a charm. :)

System Requirements

IMPORTANT WARNING: iRedMail is designed to be deployed on a FRESH server system, which means your server does NOT have mail related components installed, e.g. MySQL, OpenLDAP, Postfix, Dovecot, Amavisd, etc. iRedMail will install and configure them for you automatically. Otherwise it may override your existing files/configurations althought it will backup files before modifing, and it may be not working as expected.

Preparations

Set a proper hostname and IP address for Jail server

We use hostname mx.example.com and internal IP address 172.16.122.244 for example. We created an alias IP address on network interface em0, so we have below setting in /etc/rc.conf for this IP address like below:

# Part of file: /etc/rc.conf

ifconfig_em0_alias0="inet 172.16.122.244 netmask 255.255.255.0"

# Settings for our Jail: mx.example.com.
jail_mx_example_com_hostname="mx.example.com"
jail_mx_example_com_ip="172.16.122.244"

# Required by PostgreSQL, otherwise initializing database will fail.
jail_mx_example_com_parameters='allow.sysvipc=1'

Install sysutils/ezjail and add required settings

  • Install ezjail with ports tree:
# cd /usr/ports/sysutils/ezjail/
# make install clean
  • Enable Jail by adding below setting in /etc/rc.conf:
# Part of file: /etc/rc.conf

# Start ezjail while system start up
ezjail_enable="YES"
  • [OPTIONAL] Allow to use ping command inside Jail by adding below line in /etc/sysctl.conf:
# Part of file: /etc/sysctl.conf
security.jail.allow_raw_sockets=1
  • Rebooting system is required after changing /etc/rc.conf.
# reboot

Create Jail

  • After server reboot, create the base jail that all jails we created later will use:
# ezjail-admin install -p
  • Create Jail for domain name mx.example.com, bound to internal IP address 172.16.122.244. All files are placed under /jails/mx.example.com:
# ezjail-admin create -r /jails/mx.example.com mx.example.com 172.16.122.244
  • Set hostname of Jail in /jails/mx.example.com/etc/rc.conf:
# File: /jails/mx.example.com/etc/rc.conf
hostname="mx.example.com"

  • [OPTIONAL] Share /usr/ports/distfiles/ with Jail by adding below line in /etc/fstab.mx_example_com:

    • NOTE: Jail will set ports tree directory to /var/ports instead of /usr/ports in /jails/mx.example.com/etc/make.conf, you can either use this default setting or change it to /usr/ports.
# Part of file: /etc/fstab.mx_example.com
/usr/ports/distfiles /jails/mx.example.com/basejail/usr/ports/distfiles nullfs rw 0 0
  • Start Jail.
# /usr/local/etc/rc.d/ezjail restart
  • List all Jails:
# ezjail-admin list
STA JID  IP               Hostname                          Root Directory
--- ---- ---------------- --------------------------------- ------------------------
DS  1    172.16.122.244   mx.example.com                    /jails/mx.example.com

Install iRedMail

We can now enter this Jail with below command:

# ezjail-admin console mx.example.com
  • In Jail, update /etc/resolv.conf with valid DNS server address(es). For example:
# File: /etc/resolv.conf
nameserver 172.16.122.2
  • In Jail, install binary package bash-static, it's required by iRedMail.
# pkg_add -r bash-static

Start iRedMail installer

For Chinese users: Our domain name "iredmail.org" is blocked in China mainland since Jun 04, 2011, please replace all 'iredmail.org' by its IP address "106.187.51.47" (without quotes) in /root/iRedMail-x.y.z/pkgs/get_all.sh BEFORE executing "iRedMail.sh". This is a Linode VPS hosted in Tokyo, Japan.

It's now ready to start iRedMail installer inside Jail, it will ask you several simple questions, that's all steps to setup a full-featured mail server.

# bash          # <- start bash shell, REQUIRED
# cd /root/iRedMail/
# LOCAL_ADDRESS='172.16.122.244' bash iRedMail.sh

Screenshots of installation:

  • Welcome and thanks for your use

  • Specify location to store all mailboxes. Default is /var/vmail/.

  • Choose backend used to store mail accounts. You can manage mail accounts with iRedAdmin, our web-based iRedMail admin panel.

IMPORTANT NOTE: There's no big difference between available backends, so it's strongly recommended to choose the one you're familiar with for easier management and maintenance after installation.

  • If you choose to store mail accounts in OpenLDAP, iRedMail installer will ask you two questions about OpenLDAP.

LDAP suffix.

Password of LDAP root dn.

  • Set password of MySQL or PostgreSQL admin user.

NOTE: MySQL is used to store data of other applications (e.g. Roundcube webmail, Cluebringer, Amavisd-new) if you choose OpenLDAP or MySQL as backend.

  • Add your first mail domain name

  • Set password of admin account of your first mail domain.

Note: This account is an admin account and a mail user. That means you can login to webmail and admin panel (iRedAdmin) with this account, login username is full email address.

  • Choose optional components

After answered above questions, iRedMail installer will ask your confirm to start installation. It will install and configure required packages automatically. Type y or Y and press Enter to start.

Configuration completed.

*************************************************************************
**************************** WARNING ***********************************
*************************************************************************
*                                                                       *
* Please do remember to *REMOVE* configuration file after installation  *
* completed successfully.                                               *
*                                                                       *
*   * /root/iRedMail-x.y.z/config
*                                                                       *
*************************************************************************
<<< iRedMail >>> Continue? [Y|n]        # <- Type 'Y' or 'y' here, and press 'Enter' to continue

Important things you MUST know after installation

Access webmail and other web applications

After installation successfully completed, you can access web-based programs if you choose to install them. Replace your_server below by your real server hostname or IP address.

Get technical support

Please post all issues, feedbacks, feature requests, suggestions in our online support forum, it's more responsible than you expected.

Notes about binary packages provided by iRedMail project

Most binary packages in iRedMail yum repository comes from below repositories, packages with -ired flag were packed by iRedMail project.