Uninstall Exchange 2000 SMTP Service Fehler 0x80005000

Hallo Leute,
habe folgendes Problem. Habe unserer vorhandenen Domain (DC=2003 / Exchange 2000) einen neuen Exchange 2003 hinzugefügt.
Alle Postfächer etc. auf den neuen verschoben usw.usw. alles Prima geklappt.

Nun ist der zeitpunkt den "alten" 2000er Exchange zu deinstallieren.
Sobald ich damit aber anfange bekomme ich folgende Meldung:

Setup failed while Removing Active Directory objects for SMTP Service (error 0x80005000: An invalid ADSI pathname was passed.) .

Additional information:
DN = /dc=de/dc=reutaxag/dc=hd/cn=Configuration/cn=Services/cn=Microsoft Exchange/cn=Reutaxag/cn=Administrative Groups/cn=/cn=Servers/cn=REUTAX-EXCHANGE/cn=Protocols/cn=SMTP

An invalid ADSI pathname was passed.

ID no: 80005000
Microsoft Exchange Setup

Service = 'SMTPSvc'

mode = 'Remove' (61954)

DN = /dc=de/dc=reutaxag/dc=hd/cn=Configuration/cn=Services/cn=Microsoft Exchange/cn=Reutaxag/cn=Administrative Groups/cn=/cn=Servers/cn=REUTAX-EXCHANGE/cn=Protocols/cn=SMTP

Service = 'SMTPSvc'

mode = 'Remove' (61954)

DN = /dc=de/dc=reutaxag/dc=hd/cn=Configuration/cn=Services/cn=Microsoft Exchange/cn=Reutaxag/cn=Administrative Groups/cn=/cn=Servers/cn=REUTAX-EXCHANGE/cn=Protocols/cn=SMTP

Service = 'SMTPSvc'

mode = 'Remove' (61954)

DN = /dc=de/dc=reutaxag/dc=hd/cn=Configuration/cn=Services/cn=Microsoft Exchange/cn=Reutaxag/cn=Administrative Groups/cn=/cn=Servers/cn=REUTAX-EXCHANGE/cn=Protocols/cn=SMTP

Service = 'SMTPSvc'

mode = 'Remove' (61954)

DN = /dc=de/dc=reutaxag/dc=hd/cn=Configuration/cn=Services/cn=Microsoft Exchange/cn=Reutaxag/cn=Administrative Groups/cn=/cn=Servers/cn=REUTAX-EXCHANGE/cn=Protocols/cn=SMTP

Service = 'SMTPSvc'

mode = 'Remove' (61954)

DN = /dc=de/dc=reutaxag/dc=hd/cn=Configuration/cn=Services/cn=Microsoft Exchange/cn=Reutaxag/cn=Administrative Groups/cn=/cn=Servers/cn=REUTAX-EXCHANGE/cn=Protocols/cn=SMTP

Service = 'SMTPSvc'

mode = 'Remove' (61954)

DN = /dc=de/dc=reutaxag/dc=hd/cn=Configuration/cn=Services/cn=Microsoft Exchange/cn=Reutaxag/cn=Administrative Groups/cn=/cn=Servers/cn=REUTAX-EXCHANGE/cn=Protocols/cn=SMTP

Service = 'SMTPSvc'

mode = 'Remove' (61954)

DN = /dc=de/dc=reutaxag/dc=hd/cn=Configuration/cn=Services/cn=Microsoft Exchange/cn=Reutaxag/cn=Administrative Groups/cn=/cn=Servers/cn=REUTAX-EXCHANGE/cn=Protocols/cn=SMTP

Service = 'SMTPSvc'

mode = 'Remove' (61954)

Setup encountered an error during Microsoft Exchange Messaging and Collaboration Services of Remove component task.


Function:
CDirectoryManager::ScDeleteDSObject
CAtomSMTP::ScRemoveDSObjects
CBaseAtom::ScRemove
CBaseServiceAtom::ScRemove
CBaseAtom::ScSetup
CDirectoryManager::ScDeleteDSObject
CAtomSMTP::ScRemoveDSObjects
CBaseAtom::ScRemove
CBaseServiceAtom::ScRemove
CBaseAtom::ScSetup
CDirectoryManager::ScDeleteDSObject
CAtomSMTP::ScRemoveDSObjects
CBaseAtom::ScRemove
CBaseServiceAtom::ScRemove
CBaseAtom::ScSetup
CDirectoryManager::ScDeleteDSObject
CAtomSMTP::ScRemoveDSObjects
CBaseAtom::ScRemove
CBaseServiceAtom::ScRemove
CBaseAtom::ScSetup
CDirectoryManager::ScDeleteDSObject
CAtomSMTP::ScRemoveDSObjects
CBaseAtom::ScRemove
CBaseServiceAtom::ScRemove
CBaseAtom::ScSetup
CDirectoryManager::ScDeleteDSObject
CAtomSMTP::ScRemoveDSObjects
CBaseAtom::ScRemove
CBaseServiceAtom::ScRemove
CBaseAtom::ScSetup
CDirectoryManager::ScDeleteDSObject
CAtomSMTP::ScRemoveDSObjects
CBaseAtom::ScRemove
CBaseServiceAtom::ScRemove
CBaseAtom::ScSetup
CDirectoryManager::ScDeleteDSObject
CAtomSMTP::ScRemoveDSObjects
CBaseAtom::ScRemove
CBaseServiceAtom::ScRemove
CBaseAtom::ScSetup
CBaseComponent::ScSetup
CBaseComponent::ScSetup
CCompServer::ScSetup
CComExchSetupComponent::Install


Was ist falsch???? Kann mir bitte jemand helfen.

Danke