There is a new version of this tutorial available for Ubuntu 20.04 (Focal Fossa).

The Perfect Server - Ubuntu 11.04 [ISPConfig 3] - Page 6

21 Install ISPConfig 3

To install ISPConfig 3 from the latest released version, do this:

cd /tmp
tar xfz ISPConfig-3-stable.tar.gz
cd ispconfig3_install/install/

The next step is to run

php -q install.php

This will start the ISPConfig 3 installer. The installer will configure all services like Postfix, SASL, Courier, etc. for you. A manual setup as required for ISPConfig 2 (perfect setup guides) is not necessary.

[email protected]:/tmp/ispconfig3_install/install# php -q install.php

 _____ ___________   _____              __ _         ____
|_   _/  ___| ___ \ /  __ \            / _(_)       /__  \
  | | \ `--.| |_/ / | /  \/ ___  _ __ | |_ _  __ _    _/ /
  | |  `--. \  __/  | |    / _ \| '_ \|  _| |/ _` |  |_ |
 _| |_/\__/ / |     | \__/\ (_) | | | | | | | (_| | ___\ \
 \___/\____/\_|      \____/\___/|_| |_|_| |_|\__, | \____/
                                              __/ |

>> Initial configuration

Operating System: Debian 6.0 (Squeeze/Sid) or compatible

    Following will be a few questions for primary configuration so be careful.
    Default values are in [brackets] and can be accepted with <ENTER>.
    Tap in "quit" (without the quotes) to stop the installer.

Select language (en,de) [en]:
 <-- ENTER

Installation mode (standard,expert) [standard]: <-- ENTER

Full qualified hostname (FQDN) of the server, eg server1.domain.tld  []: <-- ENTER

MySQL server hostname [localhost]: <-- ENTER

MySQL root username [root]: <-- ENTER

MySQL root password []: <-- yourrootsqlpassword

MySQL database to create [dbispconfig]: <-- ENTER

MySQL charset [utf8]: <-- ENTER

Generating a 2048 bit RSA private key
writing new private key to 'smtpd.key'
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
Country Name (2 letter code) [AU]:
 <-- ENTER
State or Province Name (full name) [Some-State]: <-- ENTER
Locality Name (eg, city) []: <-- ENTER
Organization Name (eg, company) [Internet Widgits Pty Ltd]: <-- ENTER
Organizational Unit Name (eg, section) []: <-- ENTER
Common Name (eg, YOUR name) []: <-- ENTER
Email Address []: <-- ENTER
Configuring Jailkit
Configuring SASL
Configuring PAM
Configuring Courier
Configuring Spamassassin
Configuring Amavisd
Configuring Getmail
Configuring Pureftpd
Configuring BIND
Configuring Apache
Configuring Vlogger
Configuring Apps vhost
Configuring Firewall
Installing ISPConfig
ISPConfig Port [8080]:
 <-- ENTER

Configuring DBServer
Installing ISPConfig crontab
no crontab for root
no crontab for getmail
Restarting services ...
Rather than invoking init scripts through /etc/init.d, use the service(8)
utility, e.g. service mysql restart

Since the script you are attempting to invoke has been converted to an
Upstart job, you may also use the stop(8) and then start(8) utilities,
e.g. stop mysql ; start mysql. The restart(8) utility is also available.
mysql stop/waiting
mysql start/running, process 27585
 * Stopping Postfix Mail Transport Agent postfix
 * Starting Postfix Mail Transport Agent postfix
 * Stopping SASL Authentication Daemon saslauthd
 * Starting SASL Authentication Daemon saslauthd
Stopping amavisd: amavisd-new.
Starting amavisd: amavisd-new.
 * Stopping ClamAV daemon clamd
 * Starting ClamAV daemon clamd
 * Stopping Courier authentication services authdaemond
 * Starting Courier authentication services authdaemond
 * Stopping Courier IMAP server imapd
 * Starting Courier IMAP server imapd
 * Stopping Courier IMAP-SSL server imapd-ssl
 * Starting Courier IMAP-SSL server imapd-ssl
 * Stopping Courier POP3 server...
 * Starting Courier POP3 server...
 * Stopping Courier POP3-SSL server...
 * Starting Courier POP3-SSL server...
 * Restarting web server apache2
 ... waiting .   ...done.
Restarting ftp server: Running: /usr/sbin/pure-ftpd-mysql-virtualchroot -l mysql:/etc/pure-ftpd/db/mysql.conf -l pam -E -Y 1 -8 UTF-8 -H -A -O clf:/var/log/pure-ftpd/transfer.log -D -b -u 1000 -B
Installation completed.
[email protected]:/tmp/ispconfig3_install/install#

The installer automatically configures all underlying services, so no manual configuration is needed.

Afterwards you can access ISPConfig 3 under or Log in with the username admin and the password admin (you should change the default password after your first login):

The system is now ready to be used.



22 Additional Notes

22.1 OpenVZ

If the Ubuntu server that you've just set up in this tutorial is an OpenVZ container (virtual machine), you should do this on the host system (I'm assuming that the ID of the OpenVZ container is 101 - replace it with the correct VPSID on your system):

  vzctl set $VPSID --capability ${CAP}:on --save


22.2 SquirrelMail

Lots of people have reported problems (such as getting 404 Not Found errors) using the SquirrelMail webmail package in their web sites created through ISPConfig 3. This guide explains how to configure SquirrelMail on an Ubuntu 11.04 server so that you can use it from within your web sites (created through ISPConfig).

SquirrelMail's Apache configuration is in the file /etc/squirrelmail/apache.conf, but this file isn't loaded by Apache because it is not in the /etc/apache2/conf.d/ directory. Therefore we create a symlink called squirrelmail.conf in the /etc/apache2/conf.d/ directory that points to /etc/squirrelmail/apache.conf and reload Apache afterwards:

cd /etc/apache2/conf.d/
ln -s ../../squirrelmail/apache.conf squirrelmail.conf
/etc/init.d/apache2 reload

Now open /etc/apache2/conf.d/squirrelmail.conf...

vi /etc/apache2/conf.d/squirrelmail.conf

... and add the following lines to the <Directory /usr/share/squirrelmail></Directory> container that make sure that mod_php is used for accessing SquirrelMail, regardless of what PHP mode you select for your website in ISPConfig:

<Directory /usr/share/squirrelmail>
  Options FollowSymLinks
  <IfModule mod_php5.c>
    AddType application/x-httpd-php .php
    php_flag magic_quotes_gpc Off
    php_flag track_vars On
    php_admin_flag allow_url_fopen Off
    php_value include_path .
    php_admin_value upload_tmp_dir /var/lib/squirrelmail/tmp
    php_admin_value open_basedir /usr/share/squirrelmail:/etc/squirrelmail:/var/lib/squirrelmail:/etc/hostname:/etc/mailname:/var/spool/squirrelmail
    php_flag register_globals off
  <IfModule mod_dir.c>
    DirectoryIndex index.php
  # access to configtest is limited by default to prevent information leak
  <Files configtest.php>
    order deny,allow
    deny from all
    allow from

Create the directory /var/lib/squirrelmail/tmp...

mkdir /var/lib/squirrelmail/tmp

... and make it owned by the user www-data:

chown www-data /var/lib/squirrelmail/tmp

Reload Apache again:

/etc/init.d/apache2 reload

That's it already - /etc/apache2/conf.d/squirrelmail.conf defines an alias called /squirrelmail that points to SquirrelMail's installation directory /usr/share/squirrelmail.

You can now access SquirrelMail from your web site as follows:

You can also access it from the ISPConfig control panel vhost as follows (this doesn't need any configuration in ISPConfig):

If you'd like to use the alias /webmail instead of /squirrelmail, simply open /etc/apache2/conf.d/squirrelmail.conf...

vi /etc/apache2/conf.d/squirrelmail.conf

... and add the line Alias /webmail /usr/share/squirrelmail:

Alias /squirrelmail /usr/share/squirrelmail
Alias /webmail /usr/share/squirrelmail

Then reload Apache:

/etc/init.d/apache2 reload

Now you can access Squirrelmail as follows:

If you'd like to define a vhost like where your users can access SquirrelMail, you'd have to add the following vhost configuration to /etc/apache2/conf.d/squirrelmail.conf:

vi /etc/apache2/conf.d/squirrelmail.conf
  DocumentRoot /usr/share/squirrelmail

Make sure you replace with the correct IP address of your server. Of course, there must be a DNS record for that points to the IP address that you use in the vhost configuration. Also make sure that the vhost does not exist in ISPConfig (otherwise both vhosts will interfere with each other!).

Now reload Apache...

/etc/init.d/apache2 reload

... and you can access SquirrelMail under!


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By: Marques

I was getting an error when trying to start apache2 after following all instructions:

[email protected]server1:/home/administrator# /etc/init.d/apache2 start
 * Starting web server apache2                                                                      Syntax error on line 27 of /etc/apache2/sites-enabled/000-apps.vhost:
Invalid command 'SuexecUserGroup', perhaps misspelled or defined by a module not included in the server configuration
Action 'start' failed.
The Apache error log may have more information.

I found that mod_suexec was not being loaded and did (note: ## !THIS! ##):

[email protected]:/home/administrator# a2enmod
Your choices are: actions alias asis auth_basic auth_digest authn_alias authn_anon authn_dbd authn_dbm authn_default authn_file authnz_ldap authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cern_meta cgi cgid charset_lite dav dav_fs dav_lock dbd deflate dir disk_cache dump_io env expires ext_filter fcgid file_cache filter headers ident imagemap include info ldap log_forensic mem_cache mime mime_magic negotiation php5 proxy proxy_ajp proxy_balancer proxy_connect proxy_ftp proxy_http proxy_scgi reqtimeout rewrite ruby setenvif speling ssl status substitute suexec suphp unique_id userdir usertrack version vhost_alias
Which module(s) do you want to enable (wildcards ok)?
suexec                                     <----------------## !THIS! ##
Enabling module suexec.  
Run '/etc/init.d/apache2 restart' to activate new configuration!

Now Apache2 starts fine:

[email protected]:/home/administrator# /etc/init.d/apache2 restart
 * Restarting web server apache2                                                             [ OK ]

Are there any other modules that should be being loaded by apache2 that I am missing?

[email protected]:/etc/apache2/mods-enabled# apache2 -l
Compiled in modules:

[email protected]:/etc/apache2/mods-enabled# ls | grep .load

By: Randy Pelayo

Hello sir,

Thanks for this tutorial i solve the error in apache. its running right now the ISPconfig in my network.

 Sir i have a question, how can i add this into my domain server in a web?so that i can access this were ever i am as long i have internet connection. I am a newbie in ubuntu or any linux langauges.  

thank you


Thanks ;-) That was very helpful now

By: Michael McShane

This is so well done that I would use this as a general howto for setting up a linux server. In fact, I am currently ending my web hosting and using this setup for my own hosting server.

I did get a couple of errors in a few places but nothing I couldn't handle. It seemed to break my install of Webadmin but I reinstalled it and it was fine.


By: TomC

I don't know how you do it... thanks so much. Perfect is right!!!! I point all my Linux newbie/wannabes to your site. It's simply the best.



I conquer. I've tried them all from webmin/virtualmin to isp omega. Either they had poor instructions, don't keep their releases up to date, or they plain just don't work. Nice work as usual Falko. Hopefully there are modules such as an auto installer in the near future.


You mean that IPSConfig is the best you tried so far?

By: Coiler

I've been following this how to and bought the ISPConfig manual (to ensure I did everything right).

Everything seems to be working except the ssh function.

 I've limited my users ssh option to only jailkit and I made the user, password and login is check but when its entered correctly and I login it instantly closes putty.

 Anyone else experienced this issue or knows how to fix it?

By: arthur

I have installed the Perfect Server on Virtual Box. No errors, no problems. It works fine.

Great work. Many thanks for the clarity and ease of implementation of your how-to, Falko!!!

By: Jesse

Hi, the tutorial is really good, I've followed step by step and my server is running pretty good but my ISP is blocking my port 25, I can't send or receive any mail from external account. I went to no-ip and bought the alternate smtp and reflector. They sent me the server and the port they're listening, I've been trying to change the port inside the postfix/ without success. What should I do to solve the problem. Thanks