Addresses checked: 104.21.30.147 (web), 172.67.173.44 (web), 142.250.142.14 (mail, gmr-smtp-in.l.google.com), 142.251.96.14 (mail, alt1.gmr-smtp-in.l.google.com), 172.253.145.14 (mail, alt2.gmr-smtp-in.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.