: Best and Safest Approach to Migrate Old Mail Service to Google Apps Gmail? I have a website and looking to migrate to use Google Apps for my email. But the thing is that I'm currently using
I have a website and looking to migrate to use Google Apps for my email. But the thing is that I'm currently using Earthlink as my mail provider for my domain name. This also goes for using Earthlink as my domain registrar too. So I basically have everything there. I just want to only migrate my mail service to google apps safely without disruption. I know I have to change my MX records in the DNS settings.
I'm not sure but how do I make earthlink as a failback MX server if the Google Apps doesnt link up right away? I dont want to risk losing any mail.
What I dont understand is why is there so many MX records? And what are the numbers in front of it mean? Does that mean priority on which one to goto if the other ones dont work?
Below I have my dns settings:
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To answer the first part of your question the numbers in front of the addresses in the MX records are the priorities for which the mail servers should be connected to. First attempts to mx records with a 10 priority, then 20, and so on.
When migrating email servers best practice is to setup the new email server, change your DNS records, but keep the old email server running for at least 72 hours for DNS changes to propagate all over the internet before switching it off. It is easy enough in most mail clients to download emails from multiple POP3 servers even if they have the same email address on two separate servers. The only thing to be sure of is once the DNS records and the new email server are setup to ensure all outbound emails go through the new server while the old server is in the process if being decommissioned.
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