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Re: [leafnode-list] Setting Path header
Mark Brown wrote:
> Thinking about it I can't see any reason why Leafnode is trying to set
> the Path: header on postings. AFAICT it doesn't use the header itself
> and I would be very surprised if an upstream server got upset because
> it was omitted. Conversely, it could expose unwanted information and
> possibly interfere with the distribution of the article if it got set to
> an unfortunate value.
> Surely it would be simpler and cleaner if Leafnode didn't give any
> special consideration to Path?
I agree, and at last hosts with private Internet address (rfc 1918) might not
appear in the path header.
Another alternative would be to set this as an option in the configuration
rfc850 (Standard for Interchange of USENET Messages) says :
The Path line is not used for replies, and should not be
taken as a mailing address. It is intended to show the
route the message travelled to reach the local site.
There are several uses for this information. One is to
monitor USENET routing for performance reasons. Another
is to establish a path to reach new sites. Perhaps the
most important is to cut down on redundant USENET traffic
by failing to forward a message to a site that is known to
have already received it. In particular, when site A
sends an article to site B, the Path line includes "A",
so that site B will not immediately send the article back
to site A. The site name each site uses to identify
itself should be the same as the name by which its
neighbors know it, in order to make this optimization
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