Issue
If SID History synchronization is being carried out then the PDC emulator must be able to communicate between source/target domains.
Solution
Also the following ports are required which are also mentioned in our CUG but here is an additional link:
https://technet.microsoft.com/en-us/library/dd772723%28WS.10%29.aspx?f=255&MSPPError=-2147217396
