I just setup my DPM and able to setup protection on a SharePoint farm in the same domain.
I need to setup protect using same DPM server on another SharePoint farm installed on another domain. The DPM domain and target domain have 2 ways forest trust.
We are able to add target SharePoint WFE server and SQL server into a new Protection group. By running first consistent check (and retry many many times). All returned with same error in DPM Alert event log IMMEDIATELY after CC is started:
Backup job for datasource: DBServer\WSS_Content on production server: DBServer.domain.com failed.
Backup job for datasource: DBServer\WSS_Content2 on production server: DBServer.domain.com failed.
Backup job for datasource: DBServer\SharePoint_Config on production server: DBServer.domain.com failed.
....etc
basically it fail all SharePoint databases' backup job. I monitor on target SQL server. The service DPMRA will be triggered immediately right after CC is started. DPMRA will be in "running" stage for a long time like 15 min and stopped itself.
In the target SQL server there is NO log related to the backup fail.
As a control test, we setup protection on several non-SharePoint database on the same SQL server. The consistent check is success.
I would like to further troubleshoot but I cannot find more log. Any advice?