PINE 4.03 on OBSD 2.3-i386

[Leo Galambos <galambos_(_at_)_com-os2_(_dot_)_ms_(_dot_)_mff_(_dot_)_cuni_(_dot_)_cz>]

Mailbox vulnerable - directory must have 1777 protection

This is the message I see everytime on PINE startup.
What does it mean 777? It wants full access for everyone?? Is it still
"protection" :)?

Please,
Can somebody explain it?

THX

Leo