Call UIT help desk. 8015814000. Sounds like it's probably an exchange server issue. If you send yourself a test email from another account does that go through? 

I am using the default mail application. I was using Outlook before, but the service cancellation notice said Outlook for iOS and Android wouldn't be supported.

Ever since they shut down the SMTP service last night I've integrated UMail into my iPhone (iOS 9.3) using the Microsoft Exchange client as recommended. But now my inbox is completely full of empty emails from UNIX date 0 and no UMail emails show up. Anyone know how to get the emails through properly?

Anyone know how to fix the ghost email issue with UMail?