Sort out some common sense of corn DNS!

Interpretation of the domain name domain name domain name resolution A record MX record CNAME record TTL





What is the

What is the

What is the

mail routing records, users can take the domain name of the mail server points to mail server, and can automatically control all mailbox settings. You only need to fill in the IP address of your server online, you can transfer all of your domain name to your own mail server.

What is the

: alias. This record allows you to map multiple names to the same computer. A computer that is commonly used to provide both WWW and MAIL services. For example, there is a computer named "host.mydomain.com" (A). It also provides WWW and MAIL services, in order to facilitate user access services. You can set two aliases (CNAME) for this computer: WWW and MAIL. The full name of the two aliases is www.mydomain.com and mail.mydomain.com". In fact they all point to "host.mydomain.com".



hypothesis, there is such a domain name myhost.abc.com (in fact, this is a DNS record, usually said there is a station called myhost host in the abc.com domain) corresponds to the IP address of 1.1.1.1, its TTL is 1>