Originally Posted by
alsummers So, problem solved for me. I hope others can benefit from this - the Domain name in my case had to be present and correct!
Thanks so much for your update!
Yes, for some configuration, the Domain Name is indeed required. For others (including Office 365 and Google Apps), it's optional. The lesson is that if your company's EAS settings don't work, ask for complete configuration details from your IT department. That makes for a good start.