Exchange admin center 2013/2016/2019

The setting for IMAP authentication can be made in the Exchange Management Console.

Navigate to "Server", select the server and click on "edit".

 

ImapEinstellung1

 

ImapEinstellung2

 

 

Please open the properties of "IMAP4" at "logon method" and choose "Basic authentication (Plain text)"

 

 

 

After having changed the settings, the IMAP4 service has to be restarted.

 

 

 

Version 7