I recently stood up an Exchange 2013 server. I have good mail flow internally and externally and can access OWA internally/externally without issue.
I am now trying to configure my iPhone. I am able to create a new exchange account on my iPhone without issue. I receive all green checks and the mailbox is added to my iPhone. Once I access the mailbox, all I have is the 'Inbox' and when refreshing I receive the following error: "Cannot Get Mail - The connection to the server failed". I have the required ports open and even my Exchange server registers my last login correctly. The certificate I installed on my exchange server and outlook clients, I also have installed on my iPhone.
I don't know what I am missing at this point. Any ideas/tips?
Here is email flow internally:
User > Exchange Server > Appliance > Internet
Thanks.