I'm just a little confused... I'm using Gmail for my mail service, and have followed their instructions. I wanted to allow users to access their email via mail.mydomain.com, but just hoping to get a little clarification.
Do I need both the CNAME and A records, or just the CNAME?
I deleted the A record for mail.mydomain.com and added a CNAME recored which points to ghs.googlehosted.com. But, now I'm wondering if I should have kept that in there?
Answer
No, you were correct to remove the old A record and replace it with the CNAME for ghs.googlehosted.com. If a particular entry (e.g. mail.example.com) has a CNAME record, it should not have either A or AAAA records as these will be disregarded.
Google does not provide individual IP addresses for each customer to use. Setting the CNAME to ghs.googlehosted.com causes requests to go to a specialized server at that address that looks up your domain and redirects web users to Gmail for your domain.
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