Exchange Server 2007 Sync Problem -HTC TITAN

HTC Titan Exchange Server 2007 Sync Problem   

Hi all, I have got this weird problem with Exchange Server 2007 sync with Windows Phone Mango. I have got the following HTC Model.

Specifications
Smartphone   : HTC Titan x310e
Windows                 : Phone 7.5
OS Version   : 7.10.7720.68
Firmware                : 1600.2200.10902.401
Bootloader   : 1.8.160015.3(132000)
Chip Soc Ver   :1.6.0.0
Exchange       : 2007 Server with the Latest Updates
Access       : OWA Enabled / Active Sync Enabled
Certificate Auth   : Local Certificate Authority. NO third-party

What I need

I am not able to send and receive E-mails on my Smartphone. Always require Outlook information pops-up although the information I have entered is correct. In short I need to Sync my Exchange e-mails on my HTC TITAN Windows Phone 7.5

What I did

1.Went to HTC TITAN Mobile Settings > Add Email accounts
2.While adding exchange account, it doesn’t find my exchange server settings. Error message “ We couldn’t find your settings”
3.Enter manually all the Details such as
4.E-mail address
5.Password
6.Domain Username
7.Domain that I logon to at my workplace
8.And then click “Sign-In”
9.Message comes up “we couldn’t find your settings”
10.I click now “advanced” tab
11.Enter my Mail server “mail.domain.local” (this is the OWA address that I type on the IE bar i.e http://mail.domain.local”
12.Then I click on “Sign-in”
13.Error message “Not trusted certificate for the domain”
14.I then installed the ROOT CA from my domain that issued to the Exchange Server. (I can confirm this because next to the Certificate it states “Root Certificate”, DER Coded binary). I created another Hotmail account and e-mailed it to that. From the Hotmail account, I installed the certificates. Don’t know where it got installed on my Windows Phone
15.After which another messages pops-up “ you would require a private certificate”
16.I enrolled and requested a Private certificate from my CA. I exported all including the Private keys
17.After which it syncs my e-mails, Temporarily

What is happening now

1.But after few minutes of inactivity, I get pop-up message “ Update your information for mail.domain.local and press save”
2.I look at my Exchange OWA under mobile devices, it says Sync Status is “OK”
3.I have entered more times that I can remember and it still asks me
4.Leaving it alone won’t do any good as it won’t sync AT ALL
5.I have Resetted the phone and re-installed the certificates
6.I have recreated the Outlook account, works for first 10 Minutes ONLY
7.I have done the setup using “Add Email accounts > Advanced Setup > Exchange Active Sync Also”
8.Checked all the system locale i.e it is US English, United States in Regional Language
9.I checked the dates and time and all are synced
10.Made sure all the Windows Phone 7.5 updates are in place using Zune
11.Made sure all the WIFI and Data Connections are available.
12.Created Hotmail account simultaneously and it SYNCS very well
13.What am I doing wrong  

Thanks for all your help. Funny iPhone and Android Devices don’t ask for all this and in one short, everything works perfect.

Joseph

Hello there,

did you have any luck with the issue?

Is the certificate you are using a self signed one by the server or is it a subject alternative name certificate, if it is self signed get your IT guys to get a SAN certificate and setup auto discover correctly and auto discover will configure account for you, and take about 30 seconds and you are all go.

you say you go to http://mail.domain.local you should be going to mail.domain.com or what ever your website extension is, if you are going to .local that would be my first clue as to why it isn't working correctly,

Cheers