Action: Lower the TTL value to reduce email delays Before performing a DNS change, it's a common practice to lower the TTL ...

Action: Lower the TTL value to reduce email delays Before performing a DNS change, it's a common practice to lower the TTL from its original value. This defines how long clients and caching DNS servers store the MX record before asking the DNS server for the MX record again. To ensure DNS servers refresh the MX record quickly, it's common to drop the TTL to a value like five minutes. After data migration completes, switch the value back to one hour. Learn more.