I just want to thank anyone who helped me through this issue. Using thawte cert worked perfectly for windows and none windows devices J From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Chris Wall Sent: Thursday, June 22, 2006 12:04 PM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Re: [isalist] off topic about commercial certificates Here is a list of supported SSL Certs with Windows Mobile Devices https://partner.microsoft.com/global/partner/40027352 Here is a way to add root certs to your windows Mobile 5.0 device (this is possible, but a pain for the admin when deploying devices). http://blogs.msdn.com/windowsmobile/archive/2005/11/03/488924.aspx By the way - this info was found by doing a Google on 'Windows Mobile SSL Certs'. Immediate results... Chris Wall ________________________________ From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Jabber Wock Sent: Thursday, June 22, 2006 2:43 PM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Re: [isalist] off topic about commercial certificates Hi, There are three places that certs are used as far as Exchange and Outlook is concerned: OWA, RPC/HTTP, and ActiveSync/OMA. For OWA and RPC/HTTP, the pre-populated certs are in your Windows workstation (XP, 2000, Mac etc.). What cert CAs are pre-populated for mobile devices? I expect this would vary by manufacturer, or even by service provider. Does anyone have a list of "officially approved pre-populated list of CAs" that we can be confident will work for mobile devices? (other than Verisign, Thawte and Geotrust) JW On 6/22/06, Evan Mann <emann@xxxxxxxxxxxxxxxxxxxxx> wrote: There are cheap ones that use trusted CA's (that MS pre-populates), you just need to be careful with which free one you use.