Addresses checked: 15.197.148.33 (web), 3.33.130.190 (web), 173.194.220.26 (mail, aspmx.l.google.com), 192.178.234.27 (mail, alt1.aspmx.l.google.com), 172.217.216.26 (mail, alt2.aspmx.l.google.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.