exchange setup question

Hello,

Just bought a new iPhone 3g and tried to setup access to my exchange email account. When I select Exchange as the account type (after adding a new account), I cannot get it to work. When I select Other as account type and then enter the same information about the server, user name, etc., things work fine. I am accessing the exchange server from outside the company firewall using the OWA address.

Am I missing anything with the email account setup as described above?

Thanks

 

I know it is an Exchange server. My Windows / Outlook is connected to it as well as my Mac mail app. With the Mac mail app, the Account Type is set to Exchange. I've tried the exact same settings on the iphone that work with Mac mail and it only works when the account is created as type "Other / IMAP". It refuses to work when I use the account type "Exchange". I was even able to get vpn working and still no luck.

For now, I'll leave it setup as an "Other / IMAP" account.

With this type of email account, my assumption is that there is no reason to leave "Fetch New Data" on "Push" since my email account is not an Exchange or mobileMe account. Is that correct?

Thanks in advance.