On 8/14/2006 9:27 AM, Burton Windle wrote:
Now that even spammers are using SPF, is there a way to penalize those
with SPF records that are too broad?
[EMAIL PROTECTED]:~$ host -t txt topsyvwkh.net
topsyvwkh.net descriptive text "v=spf1 ip4:51.0.0.0/2 ip4:66.0.0.0/2
ip4:145.0.0.0/2 ip4:245.0.0.0/2 -all"
I doubt any legit sender would SPF-authorize the entire Internet.
Like hotmail.com with about a million IPs (1014528)? :)
I wrote a script a couple years ago to calculate the IPs used by a
domain's SPF record. I had meant to but never got around to writing a
plugin for it. Actually, I never completely finished the script
either... the odd domain will cause it to run for a long time causing an
internal server error.
http://daryl.dostech.ca/scripts/spfhostcount.html
Daryl
