The current release version, imap-2004a, adds a logout hook which will do the PAM_DELETE_CRED at logout or disconnect time and should resolve the issue.
You can always find the current version on:
ftp://ftp.cac.washington.edu/mail/imap.tar.Z
There is also an experimental development snapshot of imap-2004b on:
ftp://ftp.cac.washington.edu/mail/imap-2004b.DEV.tar.ZBy the way, just as an observation: I thought that inode depletion was not considered to be an issue on Linux. At least, the advocates of the one-message/one-file class formats (such as maildir) have claimed that I am silly for worrying about inode depletion...
Anyway, I've always been concerned about old PAM credential files not being cleaned up, but the problem with DFS home space was a worse problem. I think that this is all resolved in imap-2004b.
-- Mark --
http://staff.washington.edu/mrc Science does not emerge from voting, party politics, or public debate. Si vis pacem, para bellum.
