Solve the problem that DiscuzX3 cannot receive the email address verification activation email.

1. Discuz! On the X2X3 forum, what is the background? Global? Select new user registration verification for registration and access: Email verification 2. go to the background? Global? Anti-irrigation settings? Basic Anti-irrigation settings? Select "yes" to force new user verification to activate the mailbox. if the test finds that the mailbox cannot receive the activation email, try the following settings: go to the background-webmasters-Mail settings-

1. Discuz! What is the setting of the X2 X3 forum? Global? Select "new user registration verification" for registration and access: "Email verification"
2. go to the background? Global? Anti-irrigation settings? Basic Anti-irrigation settings? Force the new user to select "yes" for the activation email address ".

If the test finds that the mailbox cannot receive the activation email, try the following settings:
Go to the background-> Webmaster-> email Settings-> Settings

[Take windows Server as an example]
1. select to connect to the SMTP server through SOCKET (ESMTP authentication is supported)
2. add a new SMTP server> SMTP server: smtp.163.com (you can change it to another email server, for example, smtp.qq.com, depending on the email service provider you have applied)
3. SMTP Port: 25
4. Verify: Select
5. sender's email address: (the email address you applied)
6. SMTP Authentication username: (the email address you applied)
7. SMTP authentication password: (your email password)
8. mail header separator: use CRLF as the separator (usually Windows host)

Background-> Webmaster-> email Settings-> detection
Test email sending