[Pan-users] Re: Filtering on the basis of a missing header

[JCA]

  Jack Cuyler wrote:

> According to the RFC, that particular header is generated server-side:
>
> 3.4.1 NNTP-Posting-Host
>
>  This line is added to the header of a posted article by the server.
>  The contents of the header is either the IP address or the fully
>  qualified domain name of the client host posting the article.  The
>  fully qualified domain name should be determined by doing a reverse
>  lookup in the DNS on the IP address of the client.  If the client
>  article contains this line, it is removed by the server before
>  acceptance of the article by the Usenet transport system.
>
> http://www.faqs.org/rfcs/rfc2980.html
>
> Additionally, many, if not most, pay servers do not include this header
> at all.

    Well, thanks for the info. That does not change the fact that I'd
still be interested in filtering on the basis of a missing field in
the header. Do you know how to do so?