Avoiding Postfix Fingerprinting

I have run nessus against a remote machine, and it has discovered that the
server is running postfix 1.1.11. Nessus has fingerprinted the server
through smtpscan (plugin 11421). The question is: is there a way to avoid
being fingerprinted in Postfix?

Thanks in advance for your answers,

Regardes
Isidro Labrador Rodríguez


______________________
Este mensaje, y en su caso, cualquier fichero anexo al mismo,
 puede contener informacion clasificada por su emisor como confidencial
 en el marco de su Sistema de Gestion de Seguridad de la 
Informacion siendo para uso exclusivo del destinatario, quedando 
prohibida su divulgacion copia o distribucion a terceros sin la 
autorizacion expresa del remitente. Si Vd. ha recibido este mensaje 
 erroneamente, se ruega lo notifique al remitente y proceda a su borrado. 
Gracias por su colaboracion.
______________________
This message including any attachments may contain confidential 
information, according to our Information Security Management System,
 and intended solely for a specific individual to whom they are addressed.
 Any unauthorised copy, disclosure or distribution of this message
 is strictly forbidden. If you have received this transmission in error,
 please notify the sender immediately and delete it.
______________________