The mail server detected your message as spam and has prevented delivery

[soporte]

The mail server detected your message as spam and has prevented delivery

Si recibes un mensaje rebote similar a este :

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:

xxxxxxx@xxxxx.com
The mail server detected your message as spam and has prevented delivery (10).

Tienes que desactivar una opcion en EXIM

Ingresar al panel root :

WHM -> Service Configuration -> Exim Configuration Manager -> Secction Filter -> Custom Filter: fail_spam_score_over_int [?] = OFF

Luego, salvar los cambios