Imo, having done this since the mid 90's, you don't have to mess with TTL since you aren't changing any of the records. And having someone do that is an additional thing to mess with that adds unnecessary steps.
TTL would be necessary if you are going from one IP to another or a different MX server etc. though.
Imo, having done this since the mid 90's, you don't have to mess with TTL since you aren't changing any of the records. And having someone do that is an additional thing to mess with that adds unnecessary steps.
TTL would be necessary if you are going from one IP to another or a different MX server etc. though.