Furthermore, this quota mechanism is not 100% effective. It is
possible to have a situation where someone may go over quota. This
- quota implementation uses a deliverate trade-off. It is necessary to
+ quota implementation uses a deliberate trade-off. It is necessary to
use some form of locking in order to have a complete bulletproof quota
enforcement, but maildirs mail stores were explicitly designed to
avoid any kind of locking. This quota approach does not use locking,