Zimbra Forums

We have a client who wants us to make our existing Exchange resource analysis tool work in Zimbra, and by far the easiest path is using EWS. We can access resources via delegates (not a big issue) but even the simplest EWS SOAP requests that are perfectly well-formed in Office 365/Exchange are generating syntax errors when we try to put them against Zimbra's EWS implementation. Has anybody else run into this, and if so is there any code / guidance they are willing to share?

What about zimbra soap api?
I use soap using powershell to document distributed email groups both ad and zimbra, contacts (ad), users (ad), users(zimbra).

can you please post one sample request and the error you are getting?