Addresses checked: 104.21.84.59 (web), 172.67.187.29 (web), 188.114.96.3 (web), 188.114.97.3 (web), 13.37.195.136 (mail, mx1.improvmx.com), 15.236.236.160 (mail, mx1.improvmx.com), 35.181.18.45 (mail, mx1.improvmx.com), 13.36.107.63 (mail, mx2.improvmx.com).
We check the web server and mail server IP addresses against free spam and malware blocklists. A listing usually means spam or malware was seen recently — follow the list’s own process to be removed.