North American Network Operators Group

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Re: rfc 1918?

  • From: bill manning
  • Date: Sun Feb 25 06:54:20 2001

"We" certainly are. As the stickie for holding that space, I field alot
of
spam complaints about drek that originates from RFC 1918 space. I really
wish 
NATs were smart enough to rewrite SMTP headers... sometimes. :)



[email protected] wrote:
> 
> Bill, You get the 10 point bonus.
> 
> Are we leaking RFC1918 SMTP headers ?
> 
> Scott
> 
> bill manning <[email protected]>@merit.edu on 02/23/2001
> 02:49:32 PM
> 
> Please respond to [email protected]
> 
> Sent by:  [email protected]
> 
> To:   [email protected]
> cc:   [email protected]
> 
> Subject:  Re: rfc 1918?
> 
> [email protected] wrote:
> >
> > Agreed Valdis,
> >
> > Our upstream's use 1918 addresses internally  so that 1918 addresses are
> > constantly bouncing off our filters
> > we have an aggressive egress filter which makes sure no 1918's leak and
> > pollute the internet ;-} and filtering on core routers is a suboptimal
> > solution RFC 1819 addresses (10 points to the person who knows the
> > predecessor)  NEED to be filtered at the border IMHO.
> >
> > Scott
> >
> 
> AS long as you are filtering, could you -PLEASE- add the SMTP filter to
> prevent email w/ RFC 1918 addresses in the headers from leaking out of
> your networks?
> 
> RFC 1597.
> 
> --bill