Handle 'Persistent-Auth: false' when provided by the server
If I try to connect to an Exchange 2016 with load balancer, the requests randomly fail with a HTTP 401 Error: getitem_401
While sometimes the request works fine: getitem_ok
If I connect directly to one of the real servers, everything is fine.
My System is an Ubuntu 18.04 with Evolution 3.28.1 but I also observed the same with Evolution 3.28.4 on an OpenSUSE.
If required, I can help you with debugging this issue or by providing more logs/information.
The issue was also discussed here: https://mail.gnome.org/archives/evolution-list/2018-July/msg00272.html