Problem: Recently upgraded to the new iPhone 6 after having a 5 for a couple of years. After a week, my iPhone was dropped and I had to get a replacement. When I got the replacement, I restored from iCloud and all seemed well. Put my password in for gmail and it synced but when I put in my password for my Exchange email, it wouldn’t sync. The server, username, domain and password all were verified but no mail would download. I tried deleting the account and reconfiguring but no luck.
Solution: Last resort… I powered my iPhone 6 off and back on again and that did the trick. Email began to download from my account. Not sure why this happened but glad it was a simple fix. Has this happened to you?