Addresses checked: 52.101.194.155 (mail, something-email.mail.protection.outlook.com), 52.101.41.21 (mail, something-email.mail.protection.outlook.com), 52.101.60.148 (mail, something-email.mail.protection.outlook.com), 52.101.9.93 (mail, something-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.