Mail problem with my machine name

[Rory Campbell-Lange <rory@campbell-lange.net>]

I'm losing mail sent to some recipients without a warning. I suspect the
problem is that some recipient's ISP mail servers fail the message
because they can't recognise my machine ("roz"), even though I'm sending
the mail via SMTP auth to my ISP.

Header excerpt:

Received: from roz ([xx.xxx.xxx.3])
        (authenticated)
        by s1.uklinux.net (8.11.6/8.11.6) with ESMTP id g82AbR716268
        for <rory@x.co.uk>; Mon, 2 Sep 2002 11:37:28 +0100
Received: from rory by roz with local (Exim 3.35 #1 (Debian))
        id 17loUe-0002ue-00
        for <rory@x.co.uk>; Mon, 02 Sep 2002 11:31:40 +0100

Exim conf excerpt:

# This transport is used for delivering messages over SMTP connections.

remote_smtp:
  driver = smtp
  authenticate_hosts = mail.campbell-lange.net
  fallback_hosts = mail.campbell-lange.net
  headers_rewrite = *@*roz mail@campbell-lange.net
  return_path = ${lc:${sender_address_local_part}}@campbell-lange.net
# authenticate_hosts = smarthost.isp.com

Thanks for any help.
Rory

-- 
Rory Campbell-Lange 
<rory@campbell-lange.net>
<www.campbell-lange.net>