Alexander Dalloz writes:
No, the default permissions are proper!
Hongwei, we had exactly that topic on Thursday last week and I explained it to you. So what did you change and how do you use mail? Which pine (source or packager and version) do you use? How else do users read mail? Are the log entries caused by users using pine and a different mail client same time?
The error message is pine's poor way of saying that it can't lock the mailbox. With permissions of 775 pine can't create the mbox.lock file that it REALLY wants to create.