WDS Domainjoin sucht falschen Server

Hallo zusammen.

Ich hoffe Ihr könnt mir helfen.
Ich installiere grad eine Domäne mit 10 Standorten.
In jedem Standort befinden sich 2 DCs.
Nun habe ich an 2 Standorten ein Problem mit dem WDS.
Ich installiere die Stationen mit einer Unattended.xml - alles noch okay.
aber an 2 Standorten funktioniert der Domainjoin nicht, weil er sich nicht den korrekten DC aussucht

hier ein Ausschnitt aus der setupact :

2015-02-05 15:20:43, Info [Shell Unattend] Starting service sppsvc
2015-02-05 15:20:43, Info [Shell Unattend] Service sppsvc already running
2015-02-05 15:20:54, Info [Shell Unattend] ProductKey set
2015-02-05 15:20:54, Info [Shell Unattend] TimeZone: Time zone set to 'W. Europe Standard Time'
2015-02-05 15:20:54, Info [Shell Unattend] Decoded password
2015-02-05 15:20:54, Info [Shell Unattend] AutoLogon Password saved
2015-02-05 15:20:54, Info [Shell Unattend] AutoLogon Domain is 'domAinXX.de'
2015-02-05 15:20:54, Info [Shell Unattend] WinLogon DefaultDomainName set to 'domainXY.de'
2015-02-05 15:20:54, Info [Shell Unattend] AutoLogon Username is 'UserXY'
2015-02-05 15:20:54, Info [Shell Unattend] WinLogon DefaultUserName set to 'UserXY'
2015-02-05 15:20:54, Info [Shell Unattend] AutoLogon LogonCount = 1
2015-02-05 15:20:54, Info [Shell Unattend] WinLogon AutoLogonCount set
2015-02-05 15:20:54, Info [Shell Unattend] AutoLogon enabled
2015-02-05 15:20:54, Info [Shell Unattend] Exiting 'specialize' pass with status 0x001f1000
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: Begin
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: Loading input parameters...
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: AccountData = [NULL]
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: UnsecureJoin = [true]
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: MachinePassword = [secret not logged]
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: JoinDomain = [domainXY.de]
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: JoinWorkgroup = [NULL]
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: Domain = [NULL]
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: Username = [NULL]
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: Password = [secret not logged]
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: MachineObjectOU = [OU=WS45,OU=WS,DC=domainXY,DC=de]
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: DebugJoin = [NULL]
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: DebugJoinOnlyOnThisError = [NULL]
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: Checking that auto start services have started.
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: Joining domain [domainXY.de]...
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: Calling DsGetDcName for domainXY.de...
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: DsGetDcName returned [ISDC3004.domainXY.de] sollte aber ISDC4503 heißen |
2015-02-05 15:20:54, Info [DJOIN.EXE] Unattended Join: Constructed domain parameter [domainXY.de\ISDC3004.domainXY.de]
2015-02-05 15:20:56, Warning [DJOIN.EXE] Unattended Join: NetJoinDomain attempt failed: 0x52e, will retry in 5 seconds...
2015-02-05 15:21:01, Warning [DJOIN.EXE] Unattended Join: NetJoinDomain attempt failed: 0x52e, will retry in 5 seconds...
2015-02-05 15:21:07, Warning [DJOIN.EXE] Unattended Join: NetJoinDomain attempt failed: 0x52e, will retry in 5 seconds...
2015-02-05 15:21:13, Warning [DJOIN.EXE] Unattended Join: NetJoinDomain attempt failed: 0x52e, will retry in 5 seconds...
2015-02-05 15:21:18, Warning [DJOIN.EXE] Unattended Join: NetJoinDomain attempt failed: 0x52e, will retry in 5 seconds...
2015-02-05 15:21:24, Warning [DJOIN.EXE] Unattended Join: NetJoinDomain attempt failed: 0x52e, will retry in 5 seconds...
.
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2015-02-05 15:27:55, Error [DJOIN.EXE] Unattended Join: NetJoinDomain failed error code is [1326]
2015-02-05 15:27:55, Error [DJOIN.EXE] Unattended Join: Unable to join; gdwError = 0x52e
2015-02-05 15:27:55, Info [DJOIN.EXE] Unattended Join: Exit, returning 0x0
2015-02-05 15:27:56, Info [windeploy.exe] Process exited with exit code [0x0]

Kann mir jemand sagen, warum er das so macht?

Schon mal herzlichen Dank

Agrippa