Any way to allow setuid daemon to access krb5 automounted nfs directories?

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Is there any way to allow setuid daemon to access krb5 automounted nfs directories? Specifically I'm looking to run spamassassin's spamd on a remote server and access user's home directories via krb5 nfs4. spamd changes user to the user receiving the email being processes and needs to modify files in the user's home directory. Is there any reasonably secure way to give this daemon the ability to do this? Any way to tell rpc.gssd to use a specific credential cache for this type of access rather than the default for that effective uid?

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Orion Poplawski
Technical Manager                     303-415-9701 x222
NWRA, Boulder Office                  FAX: 303-415-9702
3380 Mitchell Lane                       orion@xxxxxxxx
Boulder, CO 80301                   http://www.nwra.com
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