Addresses checked: 103.86.78.2 (mail, mxbiz1.qq.com), 103.86.78.3 (mail, mxbiz1.qq.com), 43.154.252.16 (mail, mxbiz2.qq.com), 43.154.252.202 (mail, mxbiz2.qq.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.