Enable PHP's mail() function in Ubuntu and solve the problem of slow email sending, Ubuntu sends email_PHP tutorial

Enable PHP's mail() function in Ubuntu and solve the problem of slow email sending. Ubuntu sends emails

If you need to use PHP's mail() function to send emails, you need to The server must install the sendmail component to support this. This is also introduced in the mail() function section of the PHP manual. Then in

Command to install sendmail under Ubuntu:

Copy code The code is as follows:
sudo apt-get install sendmail

After installation, start the sendmail service:

Copy code The code is as follows:
sudo service sendmail start

With the support of sendmail, you can use the mail() function to send emails in php.

Generally, the reason why sending emails using mail() in PHP is slow is due to slow DNS resolution, and it is often because the hostname of the server is not a real resolvable domain name.

Copy code The code is as follows:
sudo vim /etc/hosts

Then press the i key, and then you can modify the code. Add localhost.localdomain and your host alias in the 127.0.0.1 section. After making the changes, press the Esc key to exit the editing state, then enter ‘:wq’ to save and exit.

Finally restart the sendmail service:

Copy code The code is as follows:
sudo service sendmail restart

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