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WP Mail SMTP: when using SMTP mailer - disable SSL verify on PHP 5.6+
<?php
add_filter('wp_mail_smtp_custom_options', function( $phpmailer ) {
$phpmailer->SMTPOptions = array(
'ssl' => array(
'verify_peer' => false,
'verify_peer_name' => false,
'allow_self_signed' => true
)
);
return $phpmailer;
} );
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