Gettings a Kerberos ticket for a remote realm

No idea if this is the right place for this, hopefully I can get some good answers.

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Question: Can a client in a un-trusted domain get a Kerberos ticket for another domain and use this to access multiple resourced without having to type username and� password in repeatedly?� 

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Scenario:

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Domain A contains Server B and Server C.�  SPN's regsitered for each https/FQDN. Only ports 80 and 443 open to internet.

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Windows XP Client in Domain� X connects to Server B over internet� using https/FQDN with Internet Explorer.�  Enable Integrated Windows Authentication is� checked.�  Everything is OK until he/she moves to Server C and is required to� end credentials� again - this is a major pain for our customer.

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There is no trust between domain A and domain B and never wi ...