How to connect to onpremise EWS

[mutulong]

Hi hmmwhatsthisdo,

I tried the module on our onpremise exchange server, I would load the module just fine, but I spent hours to figure out how to connect the EWS, can you shed some lights how to do that?

Thank you.

[hmmwhatsthisdo]

I was only able to test this module with O365, so it's possible that on-prem Exchange with other authentication methods (Kerberos, ADFS, etc.) might not work as expected.

You can try modifying L83 of PSEWS\Public\Connect-EWS.ps1 to forward the exception returned by .AutoDiscoverUrl() through the -Exception parameter of Write-Error:

Write-Error -Exception $_ <# other parameters #>

That should expose the error returned by .AutoDiscoverUrl() via $error. You might have to dig through .Exception/.InnerException to find the exception thrown by .AutoDiscoverUrl() instead of the one thrown by PowerShell.

Unfortunately I don't have an Exchange instance to work with at the moment (on-prem or cloud/O365), so it's difficult for me to provide a whole lot of insight here.

[mutulong]

Thank you for your prompt reply, apology for being a noob of Powershell.

Any chance you could let me know how to use Conncet-EWS? specifically, where to add the AutoDiscoverUrl?

[mutulong]

This doesn't seem to work, but there is no error messages

[hmmwhatsthisdo]

When provided an endpoint URL, all Connect-EWS will do to validate connectivity is attempt to bind to the root folder of the default mailbox. You can use -Verbose to see output from it stepping through this process - no output means you're likely already connected.

[mutulong]

Thanks for your reply.
I could connect to EWS now, but I don't think Get-EWSMailboxDelegate works, the user has a few delegates in Full Access and Send As, but none of them shows up in the console.

[mutulong]

To prove the connection works -

[mutulong]

Set-EWSMailboxDelegate also gives this error, am I missing something here?

[hmmwhatsthisdo]

Apologies, I had GitHub notifications going off into the ether apparently.

Get-EWSMailboxDelegate is essentially a wrapper around Microsoft.Exchange.WebServices.Data.ExchangeService.GetDelegates() - if that's returning nothing, it's likely these aren't "true" delegates in the Exchange sense. IIRC Exchange Delegates are tabulated in like 3 different places, so it's possible that Full Control on the mailbox and Send As doesn't cut it.

What happens when you run Add-EWSMailboxDelegate? Does that work as expected and return results from Get-/Update-EWSMailboxDelegate? Does loading this mailbox in Outlook/OWA show these users are delegates?

(I haven't touched Exchange in north of 2 years, so there's not a lot I can do here.)