iPhone syncing over secure IMAP (port 993)
Posted on 2007-10-02
I'm supporting an iPhone syncing Exchange via IMAP. The syncing to the iPhone works well via IMAP (doesn't work outbound, but that's not the question). They want to use secure IMAP over port 443. I configured the Exchange server with a self-signed certificate, assigned it to the IMAP Virtual Server, and opened port 993 on the firewall. I tested the configuration using Outlook Express via IMAP SSL on a computer outside of the network. I get a certificate warning when it connects, but the connection works fine. It doesn't work on the iPhone, though. Does the certificate need to be installed on the device. I see a lot of information online about how to set up the Exchange server, but not much about the iPhone configuration. You're supposed to be able to have SSL on and choose IMAP for incoming email, but the experience I've read from people who've actually tried it is that it doesn't work. Any help is appreciated.