A listing in DroneBL is NOT always related to spam. But in most cases because of an open proxy !!!

Details about 170.81.42.102

Country: Brazil (BR)
Reverse: 170-81-42-102.ferenz.com.br
Autonomous System Number: AS266400

Lookup results for 170.81.42.102

No specific incidents regarding 170.81.42.102 were found in DroneBL's incident tracking system. This means that your IP is not listed in DroneBL.