SharePoint 2010 - FAST Search Document Preview Did Not Show Up

Hi, We have the following SharePoint FAST search topology (all servers with Window Server 2008 64-bit Enterprise):

 

 

1. 2 SharePoint 2010 server with F5 Load Balancer (sp-fep01, sp-fep02), DNS name https://intranet.acme.com

 

2. 1 SharePoint 2010 Application Server (sp-app)

 

3. 1 SharePoint 2010 Index/Crawl Server (sp-idx)

 

4. 2 FAST Search 2010 Server, one for admin (fst-adm) and one for index (fst-idx)

 

5. 2 Clustered SQL 2008

 

6. Kerberos authentication for both central admin and portal web application

 

7. SSL certificate and Redirect was handled by F5 (I did not setup the SSL cert on sp-fep01 and sp-fep02 or port 443 in IIS server since it was handle by F5,

 

or import any SSL cert in Central Admin) so when user key in http://intranet.acme.com it redirect to https://intranet.acme.com

 

8. Office Web Apps was installed on all servers

 

9. KB 2512800, KB 2475878, KB 2459257 were applied

 

10. Fast Search Center was created with FAST Search site template

 

11. Followed this article for setup AAM http://www.sharepointpromag.com/art...l-requests

 

12. Content source of portal pointed to http://sp-idx server (I mapped Central Admin host file ip address of sp-idx server)

 

 

Internal URL: http://intranet.acme.com

 

Zone: Default

 

 

Internal URL: https://intranet.acme.com

 

Zone: Default

 

 

Internal URL: http://sp-idx

 

 

Zone: Intranet

 

 

(Note: Any other AAM setup different than above caused server crawl failed)

 

 

I was abled to see the search results with document preview thumbnail by browsing http://sp-idx

 

I am not able to see document preview thumbnail if I try to access https://intranet.acme.com

 

 

What could be wrong? Is there any special properties in F5 that I had to setup or on SharePoint/Fast search config that I missed.

 

 

I also check out this article http://social.technet.microsoft.com...e10f631036, but it did not work too.

 

 

Thanks for your help.