Thing were running fine, at least that's what it appeared like. Then sporadically people started getting authentication error when logging into their IMAP mailboxes. Next the deputy principal reported that she had received other people's mail. So I ran the following script to reset all the folders:
Also, make sure that the file winbindd_idmap.tdb never gets deleted. It stores the SID to UID mappings and if it gets zapped you will see the symptoms you have reported.
Just for clarification, do you happen to have "idmap backend" parameter in your smb.conf?
Igor
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