IP Address: 209.85.220.41

Mail-sor-f41.google.com (IP address 209.85.220.41) is a mail-sorting server belonging to Google that has been flagged in various reports for spam and poor reputation, often due to spoofed sender addresses. It is a legitimate Google IP used for sending mail, but it frequently appears in abuse reports.

Key Details About mail-sor-f41.google.com

• Purpose: This is a mail-sorting server owned by Google, likely part of their Google Workspace or Gmail infrastructure, used for routing emails.
• Abuse Reports: The IP address 209.85.220.41 has been flagged in multiple reports for spam and spoofing, where the sender field is forged to look like a legitimate sender, even though the mail originates from this Google server.
• Reputation: The IP has been identified with "poor" reputation in some DMARC analyses and has been listed on blacklists.
• Verification: While associated with spam, it is a legitimate Google IP. Users receiving spam from this source should treat it as malicious, especially if the sender address is spoofed.
• Action for Admins: To prevent issues with this IP, it is recommended to ensure Google Workspace SPF and DKIM records are correctly set up to protect your domain.

Sources: Gemini (retrieved 29-Jan), Reddit

This is (part of) the GCP public cloud. Some email protection services run in GCP, but it is also an attack/spam vector.