Format of mailbox number: login@hostname. Domain Name.
The mailbox number is with a separate network domain name, and its electronic post office address is labeled after the electronic mailbox general format: login name @ hostname. Domain name. The left side of the "@" symbol is the other party's login name, the right side is the complete host name, which consists of host name and domain name. Among them, the domain name consists of several parts, each of which is called a subdomain, and each subdomain is separated by a dot "." Separated by a dot ".", each subdomain tells the user something about this mail server.
Common mailboxes are 163 mailbox, 126 mailbox, QQ mailbox, Google mailbox, Sina mailbox, Microsoft mailbox, Apple mailbox. qq mailbox format: 后缀@qq.com; Netease mailbox format: 后缀@163.com与@126.com; Google mailbox format: 后缀@gmail.com; Sina mailbox format: suffix@sina. com; Microsoft mailbox format: 后缀@hotmail.com; Apple mailbox format: 后缀@icloud.com.
How to protect the security of mailboxes:
1, set up a complex login password and change it on a regular basis: the login password of the e-mail is the first line of defense for the security of mailboxes, however, many people choose simpler passwords for the sake of memorability. The first step in the process is to make sure that you have the right password for your e-mail account, so that you can use the same password for all your e-mail accounts. In order to better protect the security of email accounts, we need to change the password to a mixed format of numbers, letters, symbols, etc., and change it regularly.
2. When you send emails to many people, you need to check the option of sending emails in secret or sending emails in group: When you send emails to many people by using email, you need to consider whether the information of many strange recipients is suitable to appear in the recipient column at the same time, and you can send emails to recipients who are not suitable for displaying the email address in the way of sending emails in secret, or you need to use the option of sending emails in group to let each person only see his/her own recipient information.
3. Prevent links and attachments from unknown sources in phishing emails: Sometimes you will receive emails from unknown sources, and the content of the emails will induce us to click on the links in the emails or download the attachments in various ways, and in such cases, you have to guard against the pitfalls of phishing emails. The first thing you need to do is to get the information you need from your computer, and then you can use it to help you get the information you need from your computer, and then you can use it to help you get the information you need from your computer.