[MAILER] DKIM signing not properly working with text part ? #40131
Description
Symfony version(s) affected: At least 5.2.3
Description
I am trying to send emails and sign them using the DkimSigner but for some reason, when I add a text() part, Gmail cannot check the signature and I end up with the following error : dkim=neutral (body hash did not verify) .
How to reproduce
Here is how I create the Email.
public function email(string $subject, string $from, $to, string $body, string $contentType = 'text/html'): Email
{
$email = (new Email())
->subject($subject)
->from($from)
->to($to)
;
if ('text/html' === $contentType) {
$email->html($body);
// If I uncomment this, DKIM signature check fails
// $email->text($this->htmlToText($body));
} else {
$email->text($body);
}
return $email;
}Here is the method that signs and sends the email (pretty straightforward).
public function send(Email $email): bool
{
try {
$privateKeyPath = __DIR__.'/../../dkim.pkey';
if (file_exists($privateKeyPath)) {
$signer = new DkimSigner('file://'.$privateKeyPath, 'mydomain.com', 'mydkimselector');
$email = $signer->sign($email);
}
$this->mailer->send($email);
} catch (\Exception $e) {
return false;
}
return true;
}Additional context
I have added 2 mails which I received : one which passes and the other one which doesn't.