Changes in the Admin Console or in Google Services
When changing settings in the Admin Console or in Google Services like Gmail or Google Calendar, it is possible the change is not reflected immediately as it may take time for the change to propagate across Google’s internal systems. While most changes take effect instantly, some changes can take up to 24 hours and a warning message indicating the expected delay will usually be displayed on the page.
Note: In some cases it may be necessary to refresh the browser before the change is visible.
Changes at your Domain Host
When you make changes at your domain host, for example by configuring the MX Records or setting up a SPF record, it takes time for the changes to take effect. This is called DNS propagation. It is the time it takes for the domain DNS to refresh the cache on the network.
The time for DNS records to take effect depends on your domain host. We have no control over this. If you want information on how long it can take, we recommend you contact your domain host. In general, DNS changes will be processed within 48 hours, but sometimes can take up to 72 hours to be fully propagated.