On Thu, Apr 03, 2003 at 03:21:54PM +0200, Markus Stumpf <[EMAIL PROTECTED]> wrote a message of 36 lines which said:
> 8.0.30.195.in-addr.arpa IN PTR mail.space.net. > IN TXT "mailto:[EMAIL PROTECTED]" > > That way the maintainers of the RR zone could authorize IPs to be valid > mailservers and receiving mailservers would only accept mails from > sending IPs that have the RR TXT record. I would refuse *any* proposal relying on in-addr.arpa records. Why? Because in many countries (typically all of Africa, except may be RSA), even the ISP have no delegation of the in-addr.arpa space. There are many reasons for that: laziness of the upstream ISP is the most common. But there is also the technical difficulty of delegating in-addr.arpa when the typical allocation is much more specific than a /24. (RFC 2317 is not widely used.) Look at ANRT (Morocco) for instance: they use 194.204.241.128/26 (the object is properly registered in the RIPE database), are fed by the ISP "ONPT" and look at the delegation of the in-addr.arpa... Or look at the Pasteur Institute in Senegal. The IP addresse is 213.154.75.74 (in RIPEland again), The upstream is Sonatel and look at the delegation of the in-addr.arpa... #---------------------------------------------------------------------- # To unsubscribe, send a message to <[EMAIL PROTECTED]>.
