[Dovecot] configure dovecot to invoke pam_setcred() from the same process that accesses ~/Maildir?

Hello. I'm wondering how one would go about configuring dovecot to invoke pam_setcred() from the same process as (or a parent process of) the process which eventually reads the user's mail off the disk. This is required for pam modules that set kernel-level credentials which are later used to access the user's mail files.

In particular, I'm trying to use dovecot with pam_krb5 (which associates a ticket cache to a specific pid) and pam_afs_session (which associates tokens to a specific process authentication group -- roughly equivalent to a process and all its descendents).

Thanks,

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