New Zimbra Authentication Options in Office 365 Calendar Migration

Zimbra on-premise migration customers have typically kept their legacy directory services until they went live in production. 

When customers migrated from hosted Zimbra, they ran a hybrid deployment (i.e. ran directory services in parallel with Office 365.)  

Typically, both legacy and target servers were in the same domains. That is, until we received a request from a client who wanted to migrate from Zimbra to Office 365 AND change the domain name.  

In zCalReader 6.2.03 and above they can.

A pull-down on the configuration screen will let you choose your URL format based on your authentication scheme. 

Note: You should still use your Zimbra Admin credentials for the Zimbra side.