In all the emails my site is sending in its header a 127.0.0.1 address as its first hop! This is a problem because some spam blockers will block on this. denying anything that orginates from a 127.0.0.1 address. Any ideas on how to change this to my dns address?
Received: from www.mydomain.com ([216.x.x.x])
by uni02mr.unity.ncsu.edu (8.13.7/8.13.8/Nv5.2008.0610.1) with ESMTP id mA7J8J0D014820
for <firstname.lastname@example.org>; Fri, 7 Nov 2008 14:08:19 -0500 (EST)
Received: from www.mydomain.com (www.mydomain.com [127.0.0.1])
by www.mydomain.com (8.13.1/8.13.1) with ESMTP id mA7J7YVi027954
for <email@example.com>; Fri, 7 Nov 2008 14:07:34 -0500
Date: Fri, 7 Nov 2008 14:07:34 -0500
# Do not remove the following line, or various programs
# that require network functionality will fail.