Boxer delegate access

[mobISEC7]

Hello together,

I'm currently trying to configure delegate access with VMware Boxer and Secure Email gateway. After configuring EWSURL and enabling EWS at the UAG (enable.boxer.ens.ews.proxy = true) nothing changed. I'm still unable to add delegate account within the boxer app. Everytime I try to access the delegate account I get the error message "Unable to sync". After this message I get the information that I can send a request to the delegate user to get permission. Delegate permission is available, I checked with my pc and another delegate app sucessfully. 

At the boxer app I can see the following error message. 

"Failed to add <ACCOUNT NAME> calendar delegate with an error: Der Vorgang konnte nicht abgeschlossen werden. unauthorized"

Can somebody help? Is there anything I missed?

Thanks in advance. 

[Andi441]

For more details on what's going wrong you need to download the log archive from the UAG and then check out the files "seg\ews-proxy.log" and "seg\ews-transaction.log". If those logs don't have enough information you can increase the log level for those two logs (https://docs.vmware.com/en/Unified-Access-Gateway/2203/uag-deploy-config/GUID-BE6BDABA-83C5-49CA-AF5...)

For EWS proxy to work, besides setting "enable.boxer.ens.ews.proxy=true", you also need to set "ews.email.server.host.and.port=https://<YOUR_EXCHANGESERVER>:443".
If you're not using certificate based authentication you'll also need to set "remove.unsupported.auth.for.ews=false" in the same config file and make sure that your exchange server has the basic auth IIS feature installed (and it's actually enabled for the EWS application).

[OssamaMaksoud]

To fix this issue The authentication type used must be the same for both Exchange Web Services (EWS) and Exchange ActiveSync (EAS).