Boa noite, estou a ter problemas em enviar alguns emails. Recebo a seguinte mensagem de volta:
Mail delivery failed: returning message to sender
This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
AQUI APARECE O EMAIL PARA ONDE ENVIEI-RETIREI POR PRIVACIDADE
host a1.spambusters.email [185.90.57.10]
SMTP error from remote mail server after end of data:
550 A URL in this email (cork . it) is listed on https://spamrl.com/. Please resolve and retry
Conseguem ajudar. Não entendo o que se passa. Obrigada.