A listing in DroneBL is NOT always related to spam. But in most cases because of an open proxy !!!
Details about 87.171.172.100
Country: Germany (DE)
Reverse: p57abac64.dip0.t-ipconnect.de
Autonomous System Number: AS3320
Lookup results for 87.171.172.100
No specific incidents regarding 87.171.172.100 were found in DroneBL's incident tracking system. This means that your IP is not listed in DroneBL.