http://www.washington.edu/pine/faq/sysadmins.html#11.15
11.15 What do I need to know about Pine file locking and what does the "mailbox vulnerable" error mean? Your problem is covered here, I believe. It is probably also covered again and again and again in comp.mail.pine. -nicole At 21:47 on Jan 17, RAccess combined all the right letters to say: > > Hello. I am running exim on my home debian woody. I am using pine as my > email client and it shows the following error, whenever it checks the > mailbox: > > [Mailbox Vulnerable - directory /var/spool/mail must have 1777 protection] > > This is obviously a directory permission problem, and not a pine problem > (So it is a valid question for this mailing list). How is it vulnerable? > What exactly does 1777 protection mean? Currently the mail directory has > permissions (default): > > drwxrwsr-x 2 root root 4.0k Jan 17 21:45 mail > > Thanks in advance.