Addresses checked: 52.101.10.12 (mail, capps-email.mail.protection.outlook.com), 52.101.10.5 (mail, capps-email.mail.protection.outlook.com), 52.101.194.19 (mail, capps-email.mail.protection.outlook.com), 52.101.60.163 (mail, capps-email.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.