Enable full interworking with 1&1 Exchange Server
Exchange Servers hosted by provider 1&1 currently do not support basic authentication of EWS. As a consequence, push notifications do no work on Sophos Secure EMail.
Request would be to align with 1&1 and agree on a procedure that allows full interworking between Sophos Secure EMail and Hosted Exchange of 1&1 (including push notifications).
We are looking to add more options for authentication, like certificates and Modern Auth