Bug 414488

Summary:	Can't connect to a certain IMAP server
Product:	[Frameworks and Libraries] Akonadi	Reporter:	andrea.mueller <andrea.mueller>
Component:	IMAP resource	Assignee:	kdepim bugs <kdepim-bugs>
Status:	REPORTED ---
Severity:	major
Priority:	NOR
Version:	5.10.3
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed In:

Description andrea.mueller@amuezuhause.de 2019-11-25 10:19:38 UTC

SUMMARY
Since I upgraded from openSUSE Leap 15.0 to 15.1 I don't get a connection to the IMAP server at my work.
There is an error message:
"Anmeldung fehlgeschlagen, PLAIN-Anmeldung wird von diesem Server abgelehnt."
Means: "Login failed, PLAIN-Authentication denied by the server." ( It's only my translation.)

STEPS TO REPRODUCE
1. Add an IMAP account with the config like before
2. doesn't get a connection
3. 

OBSERVED RESULT

The error message appears. No connection

EXPECTED RESULT
Should connect like it was before the upgrade

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 5.55.0
Qt Version: 5.9.7

ADDITIONAL INFORMATION

The IMAP server doesn't provide an AUTH method in his capabilities. But PLAIN should be the standard.
With rainloop (in Nextcloud) and Trojita there is no problem with the connection.

I tried also with my laptop with openSUSE Tumbleweed: KDE Frameworks Version 5.64.0, Qt Version 5.13.1
No connection anyway.