lockspool(1) on OpenBSD
The text e6fa711fadaf, as OpenBSD 2.7, OpenBSD 2.6, OpenBSD 2.5, OpenBSD 2.4 shipped it.
lock user's system mailbox
The text e6fa711fadaf, as OpenBSD 2.7, OpenBSD 2.6, OpenBSD 2.5, OpenBSD 2.4 shipped it.
lock user's system mailbox