Настройка почтового обмена: восстановление записей провайдера во время распространения DNS

Оригинал

Property Mail Exchange Setup: Recovering Provider Records During DNS Propagation

Publish the mail provider's MX records with explicit priorities, and let the property management admin console distinguish an accepted configuration change from a completed cutover. Keep a forwarding host only for a bounded transition. Recovery starts with reading the current state after an ambiguous request, because blindly repeating a write can leave the operator less certain about what happened. TL;DR: Choose provider MX records for the permanent destination; use distinct priorities for prim