Aquamail can not access the exchange mail server

[emndeniz]

I am using Aquamail pro in My Samsung Note 5. For long time I have been using it for exchange mail in our company and it was good. But more than a week it has problem to reach exchange mail server. First I was suspicious about server but other mail applications such as Outlook can successfully register to exchange mail server. Aquamail consistently returns 503 error to me. What could be problem in here? I attached the failures screen shot link below. Thanks for any help.

[Nadejda Fudulska, MobiSystems, AquaMail support]

Please ask your company's "computer people" about EWS (Exchnage Web Services) specifically:

- Is this enabled on the server, or restricted somehow?

- If enabled, what are the settings (server name, login)?

- And then you can use the Manual button (after entering your email and password) in Aqua Mail and make sure you're using those settings.