I was under the impression that when using the mail proxy in BM3.7, the
private ip of a mail client in mail headers would be replaced by the
public ip of the mail proxy, thereby concealing the internal structure of
our network.

However, when sending mail from Outlook Express, the following appears in
the header, where is the private ip of the mail client
and "mail-proxy.electrodoc.co.uk" is the name of my BM mail proxy.

<<Received: from [] by mail-proxy.electrodoc.co.uk;Thu, 09
Jun 2005 08:30:23 GMT>>

Any suggestions as to how to conceal the part?

Philip Mattimoe