[Samba] Exchange setup failure

[Harsh Shah]

I am trying to install Exchange 2010 with Samba.  I am able to install the
Management tools but setup of the Mailbox role fails.  Is this known to
work with Samba 4.0 beta 3?  The release notes mention that Samba beta 3 is
able to handle installation of exchange but some issues prevent run-time
operation.

Error reported by Exchange setup:
The following error was generated when "$error.Clear();
          if ($RoleIsDatacenter -ne $true)
          {
            if (test-ExchangeServersWriteAccess -DomainController
$RoleDomainController -ErrorAction SilentlyContinue)
            {
              # upgrade the discovery mailboxes to R5 version, this will
fix the RecipientDisplayType property of the discovery mailbox which was
wrong in R4.
              get-mailbox -RecipientTypeDetails DiscoveryMailbox
-DomainController $RoleDomainController | where {$_.IsValid -eq $false} |
set-mailbox -DomainController $RoleDomainController
              $name =
[Microsoft.Exchange.Management.RecipientTasks.EnableMailbox]::DiscoveryMailboxUniqueName;
              $dispname =
[Microsoft.Exchange.Management.RecipientTasks.EnableMailbox]::DiscoveryMailboxDisplayName;
              $mbxs = @( get-mailbox -Filter {name -eq $name}
-IgnoreDefaultScope -resultSize 1 );
              if ( $mbxs.length -eq 0)
              {
                $dbs = @(get-MailboxDatabase -Server:$RoleFqdnOrName
-DomainController $RoleDomainController);
                if($dbs.Length -ne 0)
                {
                  $mbxUser = @(get-user -Filter {name -eq $name}
-IgnoreDefaultScope -ResultSize 1);
                  if ($mbxUser.Length -ne 0)
                  {
                    enable-mailbox -Discovery -identity $mbxUser[0]
-DisplayName $dispname -database $dbs[0].Identity;
                  }
                }
              }
            }
            else
            {
              write-exchangesetuplog -info "Skipping creating Discovery
Search Mailbox because of insufficient permission."
            }
          }
        " was run: "Active Directory operation failed on
ip-10-252-67-22.testdm2.alinuxsrv.com. This error is not retriable.
Additional information: The attribute syntax specified to the directory
service is invalid.
Active directory response: 0000200B: objectclass_attrs: attribute
'authOrig' on entry 'CN=DiscoverySearchMailbox
{D919BA05-46A6-415f-80AD-7E09334BB852},CN=Users,DC=testdm2,DC=alinuxsrv,DC=com'
contains at least one invalid value!".

Active Directory operation failed on ip-10-252-67-22.testdm2.alinuxsrv.com.
This error is not retriable. Additional information: The attribute syntax
specified to the directory service is invalid.
Active directory response: 0000200B: objectclass_attrs: attribute
'authOrig' on entry 'CN=DiscoverySearchMailbox
{D919BA05-46A6-415f-80AD-7E09334BB852},CN=Users,DC=testdm2,DC=alinuxsrv,DC=com'
contains at least one invalid value!

The syntax is invalid.
Click here for help...
http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.141).aspx?v=14.1.218.11&e=ms.exch.err.Ex88D115&l=0&cl=cp

Thanks,
Harsh