Cita:
Iniciado por Apolo 
por lo pronto en el campo "Host" puedes poner "SOA" (sin las comillas).
No controlo nada de SPF, pero creo que ha funcionado
Received-SPF: pass (google.com: domain of
[email protected] designates 74.125.82.53 as permitted sender) client-ip=74.125.82.53;
Authentication-Results: mx.google.com; spf=pass (google.com: domain of
[email protected] designates 74.125.82.53 as permitted sender)
[email protected]