add_action('phpmailer_init', function($phpmailer) {
    $phpmailer->isSMTP();
    $phpmailer->Host       = 'mail.norwood.com.au'; // your SMTP relay
    $phpmailer->From       = 'norwood.customercare@norwood.com.au';
    $phpmailer->FromName   = 'Norwood customer care';
});
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="https://www.norwood.com.au/wp-sitemap-index.xsl" ?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><sitemap><loc>https://www.norwood.com.au/wp-sitemap-posts-post-1.xml</loc></sitemap><sitemap><loc>https://www.norwood.com.au/wp-sitemap-posts-page-1.xml</loc></sitemap><sitemap><loc>https://www.norwood.com.au/wp-sitemap-posts-board_member-1.xml</loc></sitemap><sitemap><loc>https://www.norwood.com.au/wp-sitemap-posts-product-1.xml</loc></sitemap><sitemap><loc>https://www.norwood.com.au/wp-sitemap-posts-testimonial-1.xml</loc></sitemap><sitemap><loc>https://www.norwood.com.au/wp-sitemap-taxonomies-category-1.xml</loc></sitemap><sitemap><loc>https://www.norwood.com.au/wp-sitemap-taxonomies-resource_type-1.xml</loc></sitemap><sitemap><loc>https://www.norwood.com.au/wp-sitemap-taxonomies-client_partner_category-1.xml</loc></sitemap><sitemap><loc>https://www.norwood.com.au/wp-sitemap-taxonomies-product_category-1.xml</loc></sitemap><sitemap><loc>https://www.norwood.com.au/wp-sitemap-users-1.xml</loc></sitemap></sitemapindex>