I'm wondering if someone could help me, or at least point me in the right direction. Work has given me a Google Nexus One (provided by Vodafone NZ) to play with, everything is going pretty well and I'm getting my head most things. The phone is running Froyo 2.2 FRF91 One problem that I'm having is getting Microsoft Exchange ActiveSync working. I'm adding a new account, entering all the correct information, as I've done with Nokia devices and WM6 devices. We're running Windows Server 2003 with Exchange Server 2007. I get the following error: Setup could not finish: This server requires security features your phone does not support. Edit details I've selected "Use secure connection (SSL)" and have selected "Accept all SSL certificates", which is required by our webmail server. I think the problem lies in the fact that our certificate is a self signed certificate with no chain of trust to any Google approved CA authority. I've tried getting the network admin to email me *.pem and *.der certificates and install them onto the phone (but I'm not sure if I did that right either). The following thread has other people with the same problem. Froyo FRF91 exchange 2003 unable to conect - Android Help I don't want to have to install any third party apps on the phone, as they cost money and I can't guarantee that they'll work with our Exchange server setup. Is anyone able to suggest anything that we could try, or tell me if I'm doing something wrong.