North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: RFC 1918 addresses

  • From: Deepak Jain
  • Date: Sun Jun 01 14:37:38 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