Sending mail is a common feature for Discuz. After a large number of user practice feedback, only one way is recommended, that is, using the third-party STMP service to send the email.
Do not try to install Sendmail or other Mail server software on your Cloud Server for sending mail, because it is very difficulty in maintenance.
Follow is the sample using SendGrid's SMTP Service to configure sending mail for Discuz:
Log in SendGrid console, prepare your SMTP settings like the follow sample
SMTP host: smtp.sendgrid.net SMTP port: 25 or 587 for unencrypted/TLS email, 465 for SSL-encrypted email SMTP Authentication: must be checked SMTP Encryption: must SSL SMTP username: websoft9smpt SMTP password: #fdfwwBJ8f
Enter the background of Discuz, and then go to the "webmaster"-> "Mail Settings", Fill in the correct SMTP items
Set the global administrator mailbox to be consistent with the sender mailbox of SMTP
More SMTP Service(Gmail, Hotmail, QQ mail, Yahoo mail, SendGrid and so on) settings or Issues with SMTP, please refer to Websoft9's SMTP Guide (opens new window)