The Perfect Server - CentOS 6.3 x86_64 (nginx, Dovecot, ISPConfig 3) - Page 6

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Submitted by falko (Contact Author) (Forums) on Thu, 2012-08-09 17:59. ::

21 Install Jailkit

Jailkit is needed only if you want to chroot SSH users. It can be installed as follows (important: Jailkit must be installed before ISPConfig - it cannot be installed afterwards!):

cd /tmp
wget http://olivier.sessink.nl/jailkit/jailkit-2.15.tar.gz
tar xvfz jailkit-2.15.tar.gz
cd jailkit-2.15
./configure
make
make install
cd ..
rm -rf jailkit-2.15*

 

22 Install fail2ban

This is optional but recommended, because the ISPConfig monitor tries to show the log:

yum install fail2ban

We must configure fail2ban to log to the log file /var/log/fail2ban.log because this is the log file that is monitored by the ISPConfig Monitor module. Open /etc/fail2ban/fail2ban.conf...

vi /etc/fail2ban/fail2ban.conf

... and comment out the logtarget = SYSLOG line and add logtarget = /var/log/fail2ban.log:

[...]
# Option:  logtarget
# Notes.:  Set the log target. This could be a file, SYSLOG, STDERR or STDOUT.
#          Only one log target can be specified.
# Values:  STDOUT STDERR SYSLOG file  Default:  /var/log/fail2ban.log
#
#logtarget = SYSLOG
logtarget = /var/log/fail2ban.log
[...]

Then create the system startup links for fail2ban and start it:

chkconfig --levels 235 fail2ban on
/etc/init.d/fail2ban start

 

23 Install rkhunter

rkhunter can be installed as follows:

yum install rkhunter

 

24 Install SquirrelMail

To install the SquirrelMail webmail client, run...

yum install squirrelmail

Then configure SquirrelMail:

/usr/share/squirrelmail/config/conf.pl

We must tell SquirrelMail that we are using Dovecot:

SquirrelMail Configuration : Read: config.php (1.4.0)
---------------------------------------------------------
Main Menu --
1.  Organization Preferences
2.  Server Settings
3.  Folder Defaults
4.  General Options
5.  Themes
6.  Address Books
7.  Message of the Day (MOTD)
8.  Plugins
9.  Database
10. Languages

D.  Set pre-defined settings for specific IMAP servers

C   Turn color off
S   Save data
Q   Quit

Command >>
 <-- D


SquirrelMail Configuration : Read: config.php
---------------------------------------------------------
While we have been building SquirrelMail, we have discovered some
preferences that work better with some servers that don't work so
well with others.  If you select your IMAP server, this option will
set some pre-defined settings for that server.

Please note that you will still need to go through and make sure
everything is correct.  This does not change everything.  There are
only a few settings that this will change.

Please select your IMAP server:
    bincimap    = Binc IMAP server
    courier     = Courier IMAP server
    cyrus       = Cyrus IMAP server
    dovecot     = Dovecot Secure IMAP server
    exchange    = Microsoft Exchange IMAP server
    hmailserver = hMailServer
    macosx      = Mac OS X Mailserver
    mercury32   = Mercury/32
    uw          = University of Washington's IMAP server
    gmail       = IMAP access to Google mail (Gmail) accounts

    quit        = Do not change anything
Command >>
 <-- dovecot


SquirrelMail Configuration : Read: config.php
---------------------------------------------------------
While we have been building SquirrelMail, we have discovered some
preferences that work better with some servers that don't work so
well with others.  If you select your IMAP server, this option will
set some pre-defined settings for that server.

Please note that you will still need to go through and make sure
everything is correct.  This does not change everything.  There are
only a few settings that this will change.

Please select your IMAP server:
    bincimap    = Binc IMAP server
    courier     = Courier IMAP server
    cyrus       = Cyrus IMAP server
    dovecot     = Dovecot Secure IMAP server
    exchange    = Microsoft Exchange IMAP server
    hmailserver = hMailServer
    macosx      = Mac OS X Mailserver
    mercury32   = Mercury/32
    uw          = University of Washington's IMAP server
    gmail       = IMAP access to Google mail (Gmail) accounts

    quit        = Do not change anything
Command >> courier

              imap_server_type = courier
         default_folder_prefix = INBOX.
                  trash_folder = Trash
                   sent_folder = Sent
                  draft_folder = Drafts
            show_prefix_option = false
          default_sub_of_inbox = false
show_contain_subfolders_option = false
            optional_delimiter = .
                 delete_folder = true

Press enter to continue...
 <-- press ENTER


SquirrelMail Configuration : Read: config.php (1.4.0)
---------------------------------------------------------
Main Menu --
1.  Organization Preferences
2.  Server Settings
3.  Folder Defaults
4.  General Options
5.  Themes
6.  Address Books
7.  Message of the Day (MOTD)
8.  Plugins
9.  Database
10. Languages

D.  Set pre-defined settings for specific IMAP servers

C   Turn color off
S   Save data
Q   Quit

Command >>
 <--S


SquirrelMail Configuration : Read: config.php (1.4.0)
---------------------------------------------------------
Main Menu --
1.  Organization Preferences
2.  Server Settings
3.  Folder Defaults
4.  General Options
5.  Themes
6.  Address Books
7.  Message of the Day (MOTD)
8.  Plugins
9.  Database
10. Languages

D.  Set pre-defined settings for specific IMAP servers

C   Turn color off
S   Save data
Q   Quit

Command >>
 <--Q

One last thing we need to do is modify the file /etc/squirrelmail/config_local.php and comment out the $default_folder_prefix variable - if you don't do this, you will see the following error message in SquirrelMail after you've logged in: Query: CREATE "Sent" Reason Given: Invalid mailbox name.

vi /etc/squirrelmail/config_local.php

<?php

/**
 * Local config overrides.
 *
 * You can override the config.php settings here.
 * Don't do it unless you know what you're doing.
 * Use standard PHP syntax, see config.php for examples.
 *
 * @copyright &copy; 2002-2006 The SquirrelMail Project Team
 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
 * @version $Id: config_local.php,v 1.2 2006/07/11 03:33:47 wtogami Exp $
 * @package squirrelmail
 * @subpackage config
 */

//$default_folder_prefix                = '';
?>

You can now find SquirrelMail in the /usr/share/squirrelmail/ directory.

After you have installed ISPConfig 3, you can access SquirrelMail as follows:

The ISPConfig apps vhost on port 8081 for nginx comes with a SquirrelMail configuration, so you can use http://server1.example.com:8081/squirrelmail or http://server1.example.com:8081/webmail to access SquirrelMail.

If you want to use a /webmail or /squirrelmail alias that you can use from your web sites, this is a bit more complicated than for Apache because nginx does not have global aliases (i.e., aliases that can be defined for all vhosts). Therefore you have to define these aliases for each vhost from which you want to access SquirrelMail.

To do this, paste the following into the nginx Directives field on the Options tab of the web site in ISPConfig:

        location /squirrelmail {
               root /usr/share/;
               index index.php index.html index.htm;
               location ~ ^/squirrelmail/(.+\.php)$ {
                       try_files $uri =404;
                       root /usr/share/;
                       fastcgi_pass 127.0.0.1:9000;
                       fastcgi_index index.php;
                       fastcgi_param SCRIPT_FILENAME $request_filename;
                       include /etc/nginx/fastcgi_params;
                       fastcgi_param PATH_INFO $fastcgi_script_name;
                       fastcgi_buffer_size 128k;
                       fastcgi_buffers 256 4k;
                       fastcgi_busy_buffers_size 256k;
                       fastcgi_temp_file_write_size 256k;
                       fastcgi_intercept_errors on;
               }
               location ~* ^/squirrelmail/(.+\.(jpg|jpeg|gif|css|png|js|ico|html|xml|txt))$ {
                       root /usr/share/;
               }
        }
        location /webmail {
               rewrite ^/* /squirrelmail last;
        }

If you use https instead of http for your vhost, you should add the line fastcgi_param HTTPS on; to your SquirrelMail configuration like this:

        location /squirrelmail {
               root /usr/share/;
               index index.php index.html index.htm;
               location ~ ^/squirrelmail/(.+\.php)$ {
                       try_files $uri =404;
                       root /usr/share/;
                       fastcgi_pass 127.0.0.1:9000;
                       fastcgi_param HTTPS on; # <-- add this line
                       fastcgi_index index.php;
                       fastcgi_param SCRIPT_FILENAME $request_filename;
                       include /etc/nginx/fastcgi_params;
                       fastcgi_param PATH_INFO $fastcgi_script_name;
                       fastcgi_buffer_size 128k;
                       fastcgi_buffers 256 4k;
                       fastcgi_busy_buffers_size 256k;
                       fastcgi_temp_file_write_size 256k;
                       fastcgi_intercept_errors on;
               }
               location ~* ^/squirrelmail/(.+\.(jpg|jpeg|gif|css|png|js|ico|html|xml|txt))$ {
                       root /usr/share/;
               }
        }
        location /webmail {
               rewrite ^/* /squirrelmail last;
        }

If you use both http and https for your vhost, you need to add the following section to the http {} section in /etc/nginx/nginx.conf (before any include lines) which determines if the visitor uses http or https and sets the $fastcgi_https variable (which we will use in our SquirrelMail configuration) accordingly (please note that you don't need to do this if you have added this section before, for example when you configured phpMyAdmin - see chapter 16):

vi /etc/nginx/nginx.conf

[...]
http {
[...]
        ## Detect when HTTPS is used
        map $scheme $fastcgi_https {
          default off;
          https on;
        }
[...]
}
[...]

Don't forget to reload nginx afterwards:

/etc/init.d/nginx reload

Then go to the nginx Directives field again, and instead of fastcgi_param HTTPS on; you add the line fastcgi_param HTTPS $fastcgi_https; so that you can use SquirrelMail for both http and https requests:

        location /squirrelmail {
               root /usr/share/;
               index index.php index.html index.htm;
               location ~ ^/squirrelmail/(.+\.php)$ {
                       try_files $uri =404;
                       root /usr/share/;
                       fastcgi_pass 127.0.0.1:9000;
                       fastcgi_param HTTPS $fastcgi_https; # <-- add this line
                       fastcgi_index index.php;
                       fastcgi_param SCRIPT_FILENAME $request_filename;
                       include /etc/nginx/fastcgi_params;
                       fastcgi_param PATH_INFO $fastcgi_script_name;
                       fastcgi_buffer_size 128k;
                       fastcgi_buffers 256 4k;
                       fastcgi_busy_buffers_size 256k;
                       fastcgi_temp_file_write_size 256k;
                       fastcgi_intercept_errors on;
               }
               location ~* ^/squirrelmail/(.+\.(jpg|jpeg|gif|css|png|js|ico|html|xml|txt))$ {
                       root /usr/share/;
               }
        }
        location /webmail {
               rewrite ^/* /squirrelmail last;
        }

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