On 4/26/20 10:52 AM, Michał Górny wrote:
> Do you have any other idea for spam protection then?

IMO there're 2 types of spam:

1. made by accident (eg. "* * * * *" instead "@weekly" in crontab)
2. made intentionlly

The 1st can be handled by UUID - just drop any old related dataset from inbox when a new one arrived
For the 2nd: what about accepting only datasets from "valid" UUIDs, meaning where just 1 dataset/week/IPv4 (maybe /16 block) in the mean did arrived in the last few weeks/months ?

Well, other than that maybe spamassassin or Tor peolple have more theory and generic approaches?
:-)

-- 
Toralf
PGP 23217DA7 9B888F45