We have an on-premise Dynamics CRM 2011 and are getting the following error when setting up the sync profile to test Cazoomi:
Currently we do not support MSCRM 2011 with NTLM authentication (In development). For on-premise we only support Authentication with Active Directory Federation Services (ADFS).
As a workaround you can use MSCRM SyncApps to connect to MSCRM 4.0 endpoint that is available in MSCRM 2011.
On configuration please select MSCRM 4.0 SyncApps, Windows Integrated Authentication type and put the following URL as service URL and (change yourcompany name).
We also need a public accessible URL of your CRM (without VPN or remote desktop). If your CRM is not accessible from public internet (outside company network) then unfortunately we will not be able to connect to your on premise MSCRM.
At least the CRM server must be accessible from SyncApps server IPs listed here.