yep - this you would think. but the reality is different and does not work like this. here the statement from em client support:
Although I understand your situation, our application isn’t malfunctioning and from the developer’s point of view there’s nothing to fix. The application is designed to use the authentication mechanism with the highest possible security level.
In this case, it’s CRAM-MD5 and for Bluewin to fix this they just need to remove this authentication method from the server capabilities, then eM Client will use PLAIN authentication on the SSL port automatically.
this is just another case which proofs the statement of “edv” in german.
“elektronische datenverarbeitung” would be “electronic data processing” in english - but is more often than not: “ende der vernunft” - “end of reason”.