DNSBL Spam Check

Checked IP: 51.255.21.176
rDNS/PTR record: zimbra.linkeo.com

Not Listed: 25 checks
Check Response time
Found rDNS/PTR: zimbra.linkeo.com
45.5871 ms
Inactive: 2
Inactive
Response in: 4.7200179 seconds
Amount of searched blacklists: 25 (2 inactive)