listing policy seems clear
lists IPs
http://www.uceprotect.net/en/index.php
+ takes money for faster delisting
+ listing policy is documented
+ usage policy is documented: free
+ a lot of drama
+ https://www.heise.de/hintergrund/Spam-Golem-291396.html
+ german
+ also see comments
+ https://news.admin.net-abuse.email.narkive.com/boJTu7JC/claus-v-wolfhausen-harasement
+ https://www.linode.com/community/questions/2324/uceprotectnet-has-us-blacklisted
+ https://uceprotect.wtf/
+ https://www.aaroncake.net/misc/showthought.asp?thought=57
+ https://www.dnsbl.com/search/label/claus%20v.%20wolfhausen
+ https://wordtothewise.com/2018/06/another-day-another-dead-blacklist/
+ https://community.spiceworks.com/topic/2170592-uceprotect-blacklist-scam
+ http://kontech.net/uceprotect-blacklist-scheme-2020/
+ http://www.whitelisted.org/
+ paid subscription
+ policy on site
+ related to uceprotect, see there
https://www.abuse.ch/
https://www.abuse.ch/?tag=httpbl
https://www.kisarbl.or.kr/
https://www.team-cymru.org/Services/Bogons/dns.html
http://mailspike.net/usage.html
reputation-based
- http://www.whitelisted.org/
- paid subscription
- policy on site
https://puck.nether.net/or/
policies on website
http://www.isipp.com/email-accreditation/iadb-query-instruction/