TODO
check and link (de)listing policy
NOGO: delisting for money
+ how long does automatic delisting take?
+ 7d is already quite long
+ anything >7d seems excessive and should probably not be used
check and link usage policy
check and link return codes
find newsfeed or mailinglist
does not seem to have a DNSBL (anymore)
might be incorporated into spamhaus?
does host other databases about threats
+ https://puck.nether.net/or/
+ website is dead
00_NEEDS_RECHECK
https://antispam.imp.ch/
no usage policy
https://www.spamhaus.org/organization/dnsblusage/
listing policies are clearly documented
return codes are clearly documented
+ history of grandeur and retaliation listings
+ https://www.heise.de/hintergrund/Spam-Golem-291396.html
http://www.surbl.org/
good reputation
lists domains/URIs
usage policy not quite clear ATM
return codes documented: binary
http://mailspike.net/usage.html
- reputation-based
- https://puck.nether.net/or/
- policies on website
+ lists IPs
+ response codes according to their reputation, both positive and negative
+ listing policy documented
+ usage policy documented
http://www.isipp.com/email-accreditation/iadb-query-instruction/
requires signup
not quite a usage policy, but seems ok