There are multiple server for this service with one with an uri like this : /EWS/Exchange.asmx
Then for me it is an EWS server, but even with manual config, I still get an error on AquaMail.
But if you need more info, I will try to ask AWS.
@arnobeck:
Did you already check your account configuration:
Login data, Incoming / Outgoing server name, ports, Security type (SSL,...)?
> Menu > Add an account > enter your email address and password > press MANUAL
> on the next screen "New account: Incoming server" > check all settings carefully > press NEXT
> on the next screen "New account: Outgoing server" > check all settings carefully > press NEXT
> on the next screen "Almost done" > check/edit your name / account name > press "SAVE"