Great Circle Associates Firewalls
(February 1998)
 

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Subject: SGi Gauntlet and E-Mail
From: Andreas Stylianou <andreass @ zenon . logos . cy . net>
Date: Mon, 09 Feb 1998 07:34:21 +0200
To: firewalls @ GreatCircle . COM
Reply-to: andreass @ zenon . logos . cy . net

We currently operate our e-mail by using Netscape's E-Mail Servse which resides "behind" an SGi Gauntlet V.3.2.
The problem that we have is the following:

A user with the following email client  configuration:

SMTP <host>.<domain>.com
POP3  <host>.<domain>.com
USER ID <userid>@<subdomain>.<domain>.com

sends an email to any user on the Internet.
i.e From: <userid>@<subdomain>.<domain>.com
     To:      <userid2>@sgi.com

The gauntlet firewall accepts the mail and forwards  it into  the
"trusted"
network.......email server.
The trusted email server opens an SMTP connection with the firewall and
the firewall opens an SMTP connection with the destination host......................  that is where the striping of the subdomain occurs.
That is at the recipient's side the "from" field shows:
<userid>@<domain>.com (the subdomain is lost)

Please Help.....S.O.S



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