RFC 1918 addresses

Deepak Jain deepak at jain.com
Sun Jun 1 18:40:09 UTC 1997

I believe a number of firewall packages and a few anonymous remailers 
(sendmail based) support header stripping. I know for a fact spammer 
software does it.


On Sat, 31 May 1997, Matthew James Gering wrote:

> > Exposing an RFC 1918 private address in, say, a "Received:" header in
> e-mail
> > is less of a problem, though the spammers who do it are actually better
> able
> > to cover their origins, there's no way to prevent it and no normal damage
> > from doing it.
> Unless the SMTP server used to proxy email through a firewall is able to
> strip headers, it's unavoidable.
> I would like to see that feature added to SMTP servers, however, I do hate
> letting internal host names and addresses out.
> 	Matt

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