Dns pointer record not updating
Alias to: This is the system that your host (that your name value defines) will point to. This should not be a CNAME record as an alias to an alias is not correct.
Your domain name is automatically appended to your value (if it does not end it a dot). Then all you enter in the textbox for the Data value is mail.
The lower the TTL the more often a client will need to query the name servers for your host’s (record’s) IP address this will result in higher query traffic for your domain name.
Where as a very high TTL can cause downtime when you need to switch your IPs quickly.
TTL: The TTL (Time to Live) is the amount of time your record will stay in cache on systems requesting your record (resolving nameservers, browsers, etc.).
Your domain name is automatically appended to your name. Then all you enter in the textbox for the name value is These are usually referred to as alias records since they usually map an alias to its canonical name.