Addresses checked: 142.250.142.26 (mail, smtp.google.com), 142.250.142.27 (mail, smtp.google.com), 172.217.217.26 (mail, smtp.google.com), 172.217.78.26 (mail, smtp.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.