On Thu, 2005-05-19 at 10:37 +0200, Philipp Morger wrote: 
> An F for effort... ;)
> 
> --($:~)-- dig newsletter.sunrise.ch TXT +short
> "spf2.0/pra ip4:146.82.220.0/23 ip4:198.31.62.0/23 ip4:209.47.11.0/24 
> ip4:62.221.20.0/24 ip4:65.167.67.192/27 ip4:216.73.80.0/20 ~all"
> "v=spf1 ip4:146.82.220.0/23 ip4:198.31.62.0/23 ip4:209.47.11.0/24 
> ip4:62.221.20.0/24 ip4:65.167.67.192/27 ip4:216.73.80.0/20 ~all"
> 

Indeed the larger "Advertisers" have already embraced this great
technology called SPF so that they won't be filtered:

inetnum:      62.221.20.0 - 62.221.20.255
netname:      DOUBLECLICK-IE
descr:        Double Click, Ireland

Double Click DOUBLECLICK7-62-28 (NET-198-31-62-0-1) 
                                  198.31.62.0 - 198.31.63.255
Double Click MEDSYN7-UUU1 (NET-209-47-11-0-1) 
                                  209.47.11.0 - 209.47.11.255
Double Click FON-110147993679739 (NET-65-167-64-0-1) 
                                  65.167.64.0 - 65.167.67.255
NetRange:   216.73.80.0 - 216.73.95.255 
CIDR:       216.73.80.0/20 
NetName:    DOUBLECLICK-NET

network:ID:4632.146.82.220.0/23
network:Auth-Area:net.146.82.0.0-16
network:Network-Name:1682.1682.DOCLI

This thus only 'protects' nobody sending a faked newsletter (read:
advertisement) mails from doublyclick... very useful.

Greets,
 Jeroen

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