Microsoft mail servers bounce back emails

[phobienbuon]

microsoft mail like ['@live.com','@msn.com','@outlook.com','@live.co.uk','@hotmail.com','@hotmail.co.uk'];
always return my email, so i block it from sending to those emails ending with @live.com','@msn.com','@outlook.com','@live.co.uk','@hotmail.com','@hotmail.co.uk'

I replace fluent-smtp.php

function fluentSmtpInit() {
    $application = new FluentMail\Includes\Core\Application;
    add_action('plugins_loaded', function () use ($application) {
        do_action('fluentMail_loaded', $application);
    });
}

fluentSmtpInit();

if (!function_exists('wp_mail')):
    function wp_mail($to, $subject, $message, $headers = '', $attachments = array()) {
        return fluentMailSend($to, $subject, $message, $headers, $attachments);
    }
 else :
    if (!(defined('DOING_AJAX') && DOING_AJAX)):
        add_action('init', 'fluentMailFuncCouldNotBeLoadedRecheckPluginsLoad');
    endif;
endif;

With

function fluentSmtpInit() {
    $application = new FluentMail\Includes\Core\Application;
    add_action('plugins_loaded', function () use ($application) {
        do_action('fluentMail_loaded', $application);
    });
}

fluentSmtpInit();

if (!function_exists('wp_mail')) :
    function wp_mail($to, $subject, $message, $headers = '', $attachments = array()) {
        // List of domains to block
        $blocked_domains = ['@live.com','@msn.com','@outlook.com','@live.co.uk','@hotmail.com','@hotmail.co.uk'];

        // Ensure $to is an array
        if (!is_array($to)) {
            $to = explode(',', $to);
        }

        // Filter recipients based on blocked domains
        $filtered_recipients = array_filter($to, function ($email) use ($blocked_domains) {
            foreach ($blocked_domains as $domain) {
                if (strpos($email, $domain) !== false) {
                    // Log blocked emails (optional)
                    error_log("Blocked email to $email");
                    return false; // Exclude this email
                }
            }
            return true; // Allow this email
        });

        // If no valid recipients remain, block the email
        if (empty($filtered_recipients)) {
            error_log("No valid recipients left after filtering. Email not sent.");
            return false; // Prevent email from being sent
        }

        // Update recipients
        $to = implode(',', $filtered_recipients);

        // Proceed with sending the email
        return fluentMailSend($to, $subject, $message, $headers, $attachments);
    }
else :
    if (!(defined('DOING_AJAX') && DOING_AJAX)) :
        add_action('init', 'fluentMailFuncCouldNotBeLoadedRecheckPluginsLoad');
    endif;
endif;