Hello Nicola,
I did also made that change for the Dovecot config file, but then the users are autenthicating as PLAIN LOGIN. Seems like no matter how I set it up, they either autenthicate as DIGEST-MD5 or PLAIN-LOGIN, but never with CRAM-MD5.
Is it that Outlook Client 2016 is not compatible...
We have a Plesk setup that holds an email server with around 100 accounts. Everything is working fine except for one thing:
Sometimes, our Outlook Clients crash all at the same time, while asking users to enter their email and password and rejecting them to login.
This shows up the following...