What I am wondering about is, why in sogo.cong all lines are commented out with "//"? or isn't is a comment?
{
  /* *********************  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.          *
   *                                                                           *
   * **************************************************************************/
  /* Database configuration (mysql:// or postgresql://) */
  //SOGoProfileURL = "postgresql://sogo:sogo@localhost:5432/sogo/sogo_user_profile";
  //OCSFolderInfoURL = "postgresql://sogo:sogo@localhost:5432/sogo/sogo_folder_info";
  //OCSSessionsFolderURL = "postgresql://sogo:sogo@localhost:5432/sogo/sogo_sessions_folder";
  /* Mail */
  //SOGoDraftsFolderName = Drafts;
  //SOGoSentFolderName = Sent;
  //SOGoTrashFolderName = Trash;
  //SOGoIMAPServer = localhost;
  //SOGoSieveServer = sieve://127.0.0.1:4190;
  //SOGoSMTPServer = 127.0.0.1;
  //SOGoMailDomain = acme.com;
  //SOGoMailingMechanism = smtp;
  //SOGoForceExternalLoginWithEmail = NO;
  //SOGoMailSpoolPath = /var/spool/sogo;
  //NGImap4ConnectionStringSeparator = "/";
  /* Notifications */
  //SOGoAppointmentSendEMailNotifications = NO;
  //SOGoACLsSendEMailNotifications = NO;
  //SOGoFoldersSendEMailNotifications = NO;
  /* Authentication */
  //SOGoPasswordChangeEnabled = YES;
  /* LDAP authentication example */
  //SOGoUserSources = (
  //  {
  //    type = ldap;
  //    CNFieldName = cn;
  //    UIDFieldName = uid;
  //    IDFieldName = uid; // first field of the DN for direct binds
  //    bindFields = (uid, mail); // array of fields to use for indirect binds
  //    baseDN = "ou=users,dc=acme,dc=com";
  //    bindDN = "uid=sogo,ou=users,dc=acme,dc=com";
  //    bindPassword = qwerty;
  //    canAuthenticate = YES;
  //    displayName = "Shared Addresses";
  //    hostname = ldap://127.0.0.1:389;
  //    id = public;
  //    isAddressBook = YES;
  //  }
  //);
  /* LDAP AD/Samba4 example */
  //SOGoUserSources = (
  //  {
  //    type = ldap;
  //    CNFieldName = cn;
  //    UIDFieldName = sAMAccountName;
  //    baseDN = "CN=users,dc=domain,dc=tld";
  //    bindDN = "CN=sogo,CN=users,DC=domain,DC=tld";
  //    bindFields = (sAMAccountName, mail);
  //    bindPassword = password;
  //    canAuthenticate = YES;
  //    displayName = "Public";
  //    hostname = ldap://127.0.0.1:389;
  //    filter = "mail = '*'";
  //    id = directory;
  //    isAddressBook = YES;
  //  }
  //);
  /* SQL authentication example */
  /*  These database columns MUST be present in the view/table:
   *    c_uid - will be used for authentication -  it's the username or username@domain.tld)
   *    c_name - which can be identical to c_uid -  will be used to uniquely identify entries
   *    c_password - password of the user, plain-text, md5 or sha encoded for now
   *    c_cn - the user's common name - such as "John Doe"
   *    mail - the user's mail address
   *  See the installation guide for more details
   */
  //SOGoUserSources =
  //  (
  //    {
  //      type = sql;
  //      id = directory;
  //      viewURL = "postgresql://sogo:sogo@127.0.0.1:5432/sogo/sogo_view";
  //      canAuthenticate = YES;
  //      isAddressBook = YES;
  //      userPasswordAlgorithm = sha512-crypt;
  //    }
  //  );
  /* Web Interface */
  //SOGoPageTitle = SOGo;
  //SOGoVacationEnabled = YES;
  //SOGoForwardEnabled = YES;
  //SOGoSieveScriptsEnabled = YES;
  //SOGoMailAuxiliaryUserAccountsEnabled = YES;
  //SOGoTrustProxyAuthentication = NO;
  //SOGoXSRFValidationEnabled = YES;
  /* General - SOGoTimeZone *MUST* be defined */
  //SOGoLanguage = English;
  //SOGoTimeZone = America/Montreal;
  //SOGoCalendarDefaultRoles = (
  //  PublicDAndTViewer,
  //  ConfidentialDAndTViewer
  //);
  //SOGoSuperUsernames = (sogo1, sogo2); // This is an array - keep the parens!
  //SxVMemLimit = 384;
  //WOPidFile = "/var/run/sogo/sogo.pid";
  //SOGoMemcachedHost = "/var/run/memcached.sock";
  /* Debug */
  //SOGoDebugRequests = YES;
  //SoDebugBaseURL = YES;
  //ImapDebugEnabled = YES;
  //LDAPDebugEnabled = YES;
  //PGDebugEnabled = YES;
  //MySQL4DebugEnabled = YES;
  //SOGoUIxDebugEnabled = YES;
  //WODontZipResponse = YES;
  //WOLogFile = /var/log/sogo/sogo.log;
}