Great Circle Associates Firewalls
(July 1997)
 

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Subject: Re: Hiding internal host in e-mail header
From: Alan <alano @ teleport . com>
Date: Fri, 18 Jul 1997 12:59:57 -0700 (PDT)
To: Vinci CHOU <vkmchou @ HK . Super . NET>
Cc: Firewalls @ GreatCircle . COM
In-reply-to: <Pine . GSO . 3 . 96 . 970718104325 . 28142J-100000 @ linda . teleport . com>

On Fri, 18 Jul 1997, Alan wrote:

> This can be done with sendmail.  You can set up a rule that will strip out
> the host information.  
> 
> >From _Managing NFS and NIS (first edition)_ by O'Reilly & Assoc.,pg 196
> and 197:
> 
> (This is refering to the rewrite rules in sendmail.cf.)

[Snip]

I forgot that this method is a bit outdated.  Check out the "masquerade"
option.  (DM, I think...)  That will do it as well, with a whole lot less
hastle.  (The default methods for sendmail 8.8.x include a bunch of
standard rewrites for incoming and outgoing mail, so those rules will not
neccisarily be blank.)

> If you are planning on doing any sort of hacking on sendmail, I suggest
> getting the "Bat Book" from O'Reilly & Assoc.  (Sendmail 2nd edition.)
> Make sure you get the 2nd edition, as the first does not cover the lastest
> incarnation of sendmail.  (8.8.x.)

"Latest" not "lastest".  Augh.  "Dyslexia: name for it by ask!"

alano @
 teleport .
 com | "Those who are without history are doomed to retype it."



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