We have several Windows 2003 servers in our untrusted domain which we backup with DPM using certificate based authentication. All but one appear to work without any problems.
One which keeps failing throws the following error message which I am not able to make sense or find any information as to what to do next.
Before the failure, Consistency check hangs for up to 10 minutes and fails with the following error:
The DPM service was unable to communicate with the protection agent on W2003Server.dmz.domain.com. (ID 52 Details: The client and server cannot communicate, because they do not possess a common algorithm (0x80090331))
Any ideas please?