On Sat, Apr 15, 2006 at 01:18:16AM +0100, Craig Skinner wrote: > Hi lads, > > See any probs with this wee idea to auto generate the above? >
> Hey Craig, > Saw your post to openbsd-misc on MARC; > > Is there any particular reason you don't use the SPF records that gmail > publish? I added the four CIDRs to my whitelist and everything has been > fine ever since: > > athena$ host -t txt gmail.com > gmail.com descriptive text "v=spf1 ip4:216.239.56.0/23 > ip4:64.233.160.0/19 ip4:66.249.80.0/20 ip4:72.14.192.0/18 ?all" > > No need for all that resource intensive scripting. > > Thanks, a much better idea. I'll stick this in a daily cron job: for domain in gmail.com aol.com do echo \#$domain dig $domain TXT +short | tr "\ " "\n" | grep ^ip4: | cut -d: -f2 done Just generated this: #gmail.com 216.239.56.0/23 64.233.160.0/19 66.249.80.0/20 72.14.192.0/18 #aol.com 152.163.225.0/24 205.188.139.0/24 205.188.144.0/24 205.188.156.0/23 205.188.159.0/24 64.12.136.0/23 64.12.138.0/24 152.163.225.0/24 205.188.139.0/24 205.188.144.0/24 205.188.156.0/23 205.188.159.0/24 64.12.136.0/23 64.12.138.0/24
