View file vendor/egulias/email-validator/src/Result/Reason/DomainAcceptsNoMail.php
<?php namespace Egulias\EmailValidator\Result\Reason; class DomainAcceptsNoMail implements Reason { public function code() : int { return 154; } public function description() : string { return 'Domain accepts no mail (Null MX, RFC7505)'; } }