I am now in the process of evaluating different groupware server and I will do my best at sharing my findings. This
groupware server is not meant to work in parallel with Zarafa.

This is the installation procedure that I have used:

This is mostly an amalgamation of information and credit is due to the following sources:
- The ClearOS wiki: SOGo Groupware with Thunderbird Sync
- Contributors to this forum post: Installing SOGo on COS63
- Plus many more on this forum.
- Oviously the SOGo contributors: SOGo installation guide

Note: Even if I have include some information on how to install the 32-bit version, I have only installed and tested the 64-bit version.

Installation requirements:
Graphical Console or Putty
Mail (Cyrus-IMAP)
PHP
Web
MySQL
OpenLDAP (ClearOS app, usefull)

Create the “sogo” service user (no password required)

groupadd -r sogo

useradd -mr -g sogo sogo -d /var/lib/sogo

RepoForge required:

for 32-bit installation:

yum localinstall http://apt.sw.be/redhat/el6/en/i386/rpmforge/RPMS/rpmforge-release-0.5.3-1.el6.rf.i686.rpm



for 64-bit installation:

yum localinstall http://apt.sw.be/redhat/el6/en/x86_64/rpmforge/RPMS/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm

I have seen on this forum a few having difficulty with rpm's conflict issues from the epel repo.
I am going to attempt to reduce such risk by immediately limiting the access to the RPMforge repo.

nano /etc/yum.repos.d/rpmforge.repo

entry for repo rpmforge change enabled = 1 to enabled = 0 and make sure all the rest of the repo's are set to enabled = 0

Create the yum SOGo configuration:

nano /etc/yum.repos.d/sogo.repo

[sogo-rhel6]

name=Inverse SOGo Repository

baseurl=http://inverse.ca/downloads/SOGo/RHEL6/$basearch

enabled = 0

gpgcheck=0

Modify the clearos-epel configuration file to exclude all gnustep-* rpm`s
Note: you may want at the end of this install return the clearos-epel to its original state by removing the exclusion: gnustep-*, your choice.

nano /etc/yum.repos.d/clearos-epel.repo

[clearos-epel]

...

exclude=amavisd-new-* zarafa* ...

...



with 



[clearos-epel]

...

exclude=amavisd-new-* zarafa* ... gnustep-*

...

Finally the big install

yum install --enablerepo=sogo-rhel6 --enablerepo=clearos-epel --enablerepo=rpmforge-extras --enablerepo=clearos-core sogo sope49-gdl1-mysql sogo-tool

For some unknown reason the .pid folder container was not created during the above install? Lets fix that:

install -d -m 755 -o root -g root /var/run/memcached

memcached was not installed to automatically start, we are going to fix that also.

chkconfig memcached on

Start the memcached service

service memcached start

MySQL, at the password prompt enter you DB password

mysql --user=root -p 

<yourmysqlpassword>



CREATE DATABASE sogo;

CREATE USER 'sogo'@'localhost' IDENTIFIED BY '<yourdbsogopassword>';

GRANT ALL PRIVILEGES ON sogo.* TO 'sogo'@'localhost' WITH GRANT OPTION;

FLUSH PRIVILEGES;

exit

Backup the configuration folder:

cp -rp /etc/sogo/sogo.conf /etc/sogo/sogo.conf.default

A new feature of the SOGo 2.0.5, you can now use a configuration file,
replace the content of the configuration with the following and fix to your liking:

nano /etc/sogo/sogo.conf

{

    /* *********************  Main SOGo configuration file  **********************

     *                                                                           *

     * Since the content of this file is a dictionary in OpenStep plist format,  *

     * the curly braces enclosing the body of the configuration are mandatory.   *

     * See the Installation Guide for details on the format.                     *

     *                                                                           *

     * C and C++ style comments are supported.                                   *

     *                                                                           *

     * This example configuration contains only a subset of all available        *

     * configuration parameters. Please see the installation guide more details. *

     *                                                                           *

     * ~sogo/GNUstep/Defaults/.GNUstepDefaults has precedence over this file,    *

     * make sure to move it away to avoid unwanted parameter overrides.          *

     *                                                                           *

     * **************************************************************************/



    /* Web Interface */

    SOGoPageTitle = "WebMail";

    SOGoLoginModule = Mail;

    SOGoVacationEnabled = YES;

    SOGoForwardEnabled = YES;

    SOGoSieveScriptsEnabled = YES;

    SOGoMailMessageCheck = every_minute;

    // SOGoMailMessageCheck = every_10_minutes;

    SOGoMailReplyPlacement = above;

    SOGoMailSignaturePlacement = below;

    SOGoMailComposeMessageType = html;

    SOGoEnableEMailAlarms = NO;

    SOGoTimeFormat = "%H:%M";

    SOGoDayStartTime = 9;

    SOGoDayEndTime = 19;

    SOGoFirstDayOfWeek = 1;

    SOGoFirstWeekOfYear = January1;



    /* General */

    SOGoLanguage = English;

    SOGoTimeZone = <yourtimezone>; // i.e. America/Montreal

    SOGoMailDomain = <yourdomain.com>;

    SOGoAppointmentSendEMailNotifications = YES;

    SOGoFoldersSendEMailNotifications = YES;

    SOGoACLsSendEMailNotifications = YES;

    SOGoCalendarDefaultRoles = (PublicViewer, ConfidentialDandTViewer);

    SOGoSuperUsernames = (<sogouser>;

    SOGoEnablePublicAccess = YES;



    /* LDAP authentication */

    SOGoUserSources = (

        {

            type = ldap;

            baseDN = "ou=Users,ou=Accounts,<yourdc=system,dc=lan>";

            bindDN = "cn=manager,ou=Internal,<yourdc=system,dc=lan>";

            bindPassword = <yourldapbindpassword>;

            CNFieldName = cn; 

            IDFieldName = cn;

            UIDFieldName = uid; 

            bindFields = (uid);

            filter = "(objectClass = clearMailAccount)"; 

            canAuthenticate = YES; 

            displayName = "Local Addresses";

            hostname = "localhost"; 

            id = public;

            isAddressBook = NO;

            port = 389;

            MailFieldNames = (clearMailAliases,mail); 

        }

    );



    /* Database configuration (mysql:// or postgresql://) */

    SOGoProfileURL = "mysql://sogo:<yourdbsogopassword>@localhost:3306/sogo/sogo_user_profile";

    OCSFolderInfoURL = "mysql://sogo:<yourdbsogopassword>@localhost:3306/sogo/sogo_folder_info";

    OCSSessionsFolderURL = "mysql://sogo:<yourdbsogopassword>@localhost:3306/sogo/sogo_sessions_folder";



    /* Mail */

    SOGoDraftsFolderName = INBOX/Drafts;

    SOGoSentFolderName = "INBOX/Sent Items";

    SOGoTrashFolderName = INBOX/Trash;



    /* SMTP Server configuration */

    SOGoMailingMechanism = smtp;

    SOGoSMTPServer = localhost;



    /* IMAP Server configuration */

    SOGoIMAPServer = "imaps://localhost:993";

    SOGoMailShowSubscribedFoldersOnly = NO;



}

Restart the SOGo service to enable the above configuration:

service sogod restart

Modify the Web Apache Server configuration file:

nano /etc/httpd/conf.d/SOGo.conf

## adjust the following to your configuration

  RequestHeader set "x-webobjects-server-port" "443"

  RequestHeader set "x-webobjects-server-name" "<yourhostname>"

  RequestHeader set "x-webobjects-server-url" "https://<yourhostname>;"

Restart the Web Apache Server service to enable the above configuration:

service httpd restart

There is a couple of features that you may want to enable in cron jobs:

nano /etc/cron.d/sogo

- Vacation messages expiration

- Session cleanup

- Email alarms

- Daily backups

And finally see if it runs:

https://yourhostname>/SOGo

Enjoy, P.