DMARC meaning in Technology ?

What is Demarcation mean?

Demarcation is the act of creating a boundary around a place or thing.

Demarcation may also refer to:

Demarcation line, a temporary border between the countriesDemarcation problem, the question of which practices of doing science permit the resulting theories to lie within the boundaries of knowledgeDemarcation dispute, may arise when two different trade unions both claim the right to represent the same class or group of workersDemarcation point, in telephony, the point at which the telephone company network ends and connects with the wiring at the customer premisesDemarcation transactions, starting and ending database transactions using begin, commit, and rollback methods reference