localhost in Message Headers

[James R. Marcus]

Hi,
In regards to having honest headers, is it bad to have localhost.localdomain in 
the an email header?

Received: from localhost (localhost.localdomain [127.0.0.1])
        by relay1.edhance.com (Postfix) with ESMTP id 18D231A7517
        for <usern...@gmail.com>; Sat, 20 Feb 2010 23:08:19 -0500 (EST)



James