I have a problem getting the mail application for Exchange to work. I read through several treads and got to install Touchdown. Strange thing is that this app works fine and the mails from the Exchange server are sent perfectly to the HTC Desire. What is even more strange is that a colleague of mine has exactly the same Desire and is on the same Exchange server as I am and for him, the Mail application for Exchange works perfectly. I really want to use the standard mail application and would be grateful if somebody could point me in the right direction. PS: I saw there is an option in Touchdown 'Fetch and trust certificate' which is not available in Mail for Exchange. I already tried to logon to the webmail via a browser, but this did not seem to help.