iPhone 3G can't connect to Exchange 2003 SP2

Hello.  I realize you are closing this out, as you figured out the problem, but would you be williing to share the solution?  I'm having the same problem.  I have SBS 2003 (with Exchange Server 2003 SP-2).  I was able to get an older iPhone working with Activesync once the new 2.0 firmware was in.  However, I have someone in our small company with the new 3G and I can't seem to get it to work using the same process.  I'm getting the "Unagle to verify certificate" but the certificate was loaded in.  Any insight is appreciated.  Thanks.

I am also having the same problem.  Could you explain what you did to fix this?

tlgtech:

Hello.  Looks like the originator of this question is completely done here.  I can add, though, that I was able to get the iPhone in question syncing in my case.  Since Activesync was set up and the user had mobile user permissions set (as when I succeeded for the other user the first time), it was simply my confusion of internal and external DNS.  In other words, since I run SBS/Exchange 2003, when the iPhone asked me for the Server name, I wasn't thinking and put in the internal DNS name of the server.  Wrong!  Also, not necessary to include the domain in the username.  There was a bit of a gap between when I gave information to my boss and he got his older phone working on his own and when this other employee came to me with the 3G model and I had a bit of memory lapse.  Anyway, don't know if there is anything else happening in your case.  At the risk of stating stuff you already figured out I can at least summarize what ultimately worked for me regarding the iPhone settings...

- First, mailed the SSL certificate to the user as an attachment via a Gmail account he had working on the phone.  When the iPhone saw the attachment it knew it was a certificate and asked him to install, which he did.

- Second, the iPhone settings...

Selected 'Exchange' account
Email:  username@yourcompany.com   (the user's external, primary SMTP email address)
Username:  xxxx      (user's network/domain login username only - do NOT precede with ' YOURDOMAIN\ ', even though iPhone may prompt you to)
Password:  (his/her network password)
Server:  mail.yourcompany.com   (external address of Exchange server from MX record in DNS)
SSL:  Leave ON

I'm not sure whether actually adding the certificate was a factor or not.  I saw discussion of it elsewhere in other forums and it seemed a logical step to take.  But clearly I had initially entered the server name incorrectly, which would explain why I got the "unable to verify certificate" message, as the entry did not match the address coded into the certificate.  Hope this helps.  Good luck.

I am having this same problem but none of these have helped me...any suggestions???

thanks mepeirce, excluding the DomainName when entering in the user name got my 3g working with Exchange 2003 sp2 running on an SBS2003 server.

When you said you mail the certificate, What did you mail exactly? The Front-end SSL certificate?

Got it.

I installed the SSL Provider root certificate in the IPhone / Itouch.

Mailled them to my Web mail. open each one and installed them. (3 in total. The Root chain, the A chain and the site certificate.)
Then went throught the exechange setup in the Iphone / Itouch and voilà.

Donne deal.

tlgtech: you have the solution.

I had the same problem.  The problem was Forms authentication and using 128 bit encryption.

ESM - In the Exchange Virtual server go to properties and disable forms authentication.

In IIS go to the default web site/ Exchange / Properties / Directory Security / Edit /
un-check Require SSL and un-check Require 128 Bit Encryption.

If either one or both of these are checked the Iphone will not connect OWA.  I was doing some tweaking on our Exchange Server and discovered the problem.  Confirmed the issue on my own Exchange server at home.

Iphone is totally works with Exchange 2003, but how well is the debate.

I had this problem with all the correct information. Oddly enough I had to backup all my email to a .pst file, delete them all from my mailbox, then copy them back in. Once I did that they all showed up on the iphone. Also the calendar worked for me but another person I had to do the same thing to their calendar. Didn't see any problems with contacts on either one.