Hello,
There are different ways to connect to Exchange - most but not all apps (including Gmail app and stock Email app) use something called ActiveSync.
Aqua (and other apps, for Android and Windows even) - use something called EWS (Exchange Web Services).
EWS is official, supported by Microsoft since 2007 - but may have been turned off on your server by your server admins, or may require different server settings.
So, please ask your company's "computer people" about EWS (Exchange 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.
Please let me know if we can assist you further.
Nadia