how to create subdomain email address

DNS Subdomain Authorization:Here we only show the subdomain authorization for forward parsingThe parent domain is able to parse the a record of the subdomain (not authoritative, because it is not self-parsing),The subdomain cannot resolve the A

Author: syd168 15:09:18 from: Mr. Linux I. Basic DNS knowledgeAs we all know, in network communication, data links Use MAC addresses. The network layer uses IP addresses, and the transport layer uses port numbers,

Subdomain authorization: In fact, a larger domain is divided into small areas, each small area can be managed by a group or groups of servers, these servers only resolve domain names within their jurisdiction, resolution requests beyond their scope

A recordThe A (Address) record is used to specify the IP address record corresponding to the Host Name (or domain name. You can direct the website server under this domain name to your web server. You can also set a subdomain name for your domain

A record Quote:The A (Address) record is used to specify the IP address record corresponding to the Host Name (or domain name. You can direct the website server under this domain name to your web server. You can also set a subdomain name for your

1. Cross-domain and cross-server solutionsThe session is divided into two main parts:One is session data, which is stored in the server's TMP file by default, and is in the form of a fileThe other is the session Id,session ID that indicates session

I. Overview of the Intranet/Internet platform , The dotted line below is the Internet, which provides Web Services, DB services, DNS services, exchange services, and so on; The above is the Intranet, which provides services similar to the

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1. What is DNS? (Domain Name System) domain name system. In fact, the functions implemented by DNS are very simple and effective, so that users do not need to remember the IP addresses that frequently access the server, you can directly access the

DNS ServiceDNS: Domain Nsme ServiceRole: Resolving the domain name to IP (forward parsing) or resolving IP to a domain name (reverse parsing)Classification of DNS top-level domains:Organization domain:. com. net. org .....Country domain:. CN. tw. JP