Dear Maintainer, I see similar behavior in evolution-ews, connecting Evolution to an MS Exchange server (2010?) via https://"exchangeserver.com"/EWS/Exchange.asmx
The work around in https://bugzilla.redhat.com/show_bug.cgi?id=1327072 is to rename /usr/bin/ntlm_auth, which allows Evolution to authenticate w/ Exchange. (Tested on sid), or uninstall winbind. -- System Information: Debian Release: stretch/sid APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'testing') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.4.0-1-amd64 (SMP w/12 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) -Jim