I already installed Postfix and it's working sending from terminal. But Send mail via PHP is not coz I do know what setting or how to create or get the usersname / password and other details needed
//EMAIL SENDING CONFIGURATION
define('MAILER', "smtp");
define('SMTP_HOST', "");
define('SMTP_PORT', 587);
define('SMTP_USERNAME', "");
define('SMTP_PASSWORD', "");
define('SMTP_ENCRYPTION', "");
Wordpress uses PHP mail() by default. If you disable/uninstall any extensions that try to manage email sending and delete the configuration lines above from wp-config.php, it should work fine.
You can check if PHP's mail() function is working properly by creating a file with the following content:
<?php
ini_set('display_errors', 1);
error_reporting(-1);
mail ('you@example.com', 'Postfix Test', 'A test email') || print_r(error_get_last());
?>
Place it in your document root (e.g. /var/www/html) and browse to it. If it's blank, everything went well and you should receive an email shortly.
Hi kamaln7, thank you for your response. I tried your script and yes the email was sent to my test account after 2 to 3 minutes. But using Easy SMTP plugin for wordpress and setup gmail smtp account I got this after test mail.
SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
I'm using SSL 465 on my setting.
I also tried nc -vz smtp.gmail.com 25 and the result is
"Connection to smtp.gmail.com 25 port [tcp/smtp] succeded!
PHP uses an MTA to send it's mails trough mail(),
if you want to override it on system level you could edit /etc/postfix/main.cf and add
relayhost = [smtp.domain.tld]:587
if you are on an older system, you might need to configure sendmail instead