This message was created automatically by mail delivery software.<br />
<br />
A message that you sent could not be delivered to one or more of its<br />
recipients. This is a permanent error. The following address(es) failed:<br />
<br />
  <a href="action.php?action=write&amp;mail_to=frerichspetra5@gmail.com">frerichspetra5@gmail.com</a><br />
    host gmail-smtp-in.l.google.com [142.250.110.26]<br />
    SMTP error from remote mail server after end of data:<br />
    550-5.7.26 Your email has been blocked because the sender is unauthenticated.<br />
    550-5.7.26 Gmail requires all senders to authenticate with either SPF or DKIM.<br />
    550-5.7.26<br />
    550-5.7.26  Authentication results:<br />
    550-5.7.26  DKIM = did not pass<br />
    550-5.7.26  SPF [justneo.de] with ip: [80.67.31.41] = did not pass<br />
    550-5.7.26<br />
    550-5.7.26  For instructions on setting up authentication, go to<br />
    550 5.7.26  <a href="https://support.google.com/mail/answer/81126#authentication" target="_blank">https://support.google.com/mail/answer/81126#authentication</a> ffacd0b85a97d-38db1e89279si1750685f8f.793 - gsmtp<br />
