First, in terms of encryption settings, we actually made progress.
You can use either:
- SSL (any) or SSL (strict) + port 465
OR
- STARTTLS (any) or STARTTLS (stict) + port 587
Second, when it comes to logging in:
- Try entering your login for the outgoing server as "username" without the "@domain" part. AquaMail defaults (pre-fills) with "username@domain".
( I think the server *may* only accept it like that )
AND / OR
- In the outgoing server settings, please try changing Authentication from "Choose automatically" to "SASL PLAIN" OR "SASL LOGIN"
( I think the server *may* be advertising CRAM-MD5 and as usual it's not working... )