Hola de nuevo Siguiendo las indicaciones de Camaleon me he puesto a revisar dominios con la pagina http://www.dnsreport.com/tools/dnsreport.ch?domain=xxxxx y he visto que me canta un warning: *WARN*SPF recordYour domain does not have an SPF record. This means that spammers can easily send out E-mail that looks like it came from your domain, which can make your domain look bad (if the recipient thinks you really sent it), and can cost you money (when people complain to you, rather than the spammer). You may want to add an SPF recordhttp://www.openspf.org/ASAP, as 01 Oct 2004 was the target date for domains to have SPF records in place (Hotmail, for example, started checking SPF records on 01 Oct 2004). He visto en la wikipedia (http://es.wikipedia.org/wiki/SPF ) informacion al respecto, pero no me ha quedado claro, no se si es importante, y si lo es, no se como se añade ese registro a los dominios. Alguien lo usa? Un saludo Emiliano Sutil