Addresses checked: 104.21.75.149 (web), 172.67.177.228 (web), 52.101.124.117 (mail, nsdgroups-com.mail.protection.outlook.com), 52.101.137.0 (mail, nsdgroups-com.mail.protection.outlook.com), 52.101.137.2 (mail, nsdgroups-com.mail.protection.outlook.com), 52.101.157.80 (mail, nsdgroups-com.mail.protection.outlook.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.