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clara.sanchez@alumnos-santagema.es: host aspmx.l.google.com[74.125.197.26] said: 550-5.7.1 Tu correo electrónico se ha rechazado debido a la política del 550-5.7.1 Colegio. Sólo es posible mandar correos entre direcciones del 550 5.7.1 dominio @alumnos-santagema.es y @colegio-santagema.es - gcdp r2-20020a6560c2000000b005dc958db2fcsi6487541pgv.363 - gsmtp (in reply to end of DATA command)