Sugar Mail

I can't set up Exchange

Good evening
after a long time I went back to install Sugar mail, but I can no longer set up my exchange account. When I enter address and password sends The error: WWW-Authenticate header missing

Please check that server name is same as before.

It’s not that simple.
I wouldn’t have written here.
I enter my address the password, but sometimes it finds the autodiscover address other times not, I tried to enter it manually and I also entered the domain but the error that is returned is always the same.
When I tried Sugar mail a few months ago, I didn’t have this problem.

Thank you.

Maybe something’s changed about the server? I do remember that it worked for you before.