Sh4meful DMARC Spoof Detection
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
209.85.220.41has 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.
About this Data
▶The data here is from DMARC analysis for domains I administer, drawn from a larger dataset (comprising millions of authentication records and messages). These entries are from email attempts that failed both SPF and DKIM (and there are often alignment issues - hidden here). In many cases, these failures indicate unauthorized use of the domain name, and are commonly associated with spoofing, phishing, or other abusive mail activity.
Geolocation Information
- Country:
- US United States
- Coordinates:
- 37.751, -97.822
WHOIS Information
- Network Name:
- CIDR:
209.85.128.0/17- Reverse DNS:
-
mail-sor-f41.google.com
Last updated: 2/5/2026
Failures Detected from this IP
Showing 251-300 of 317 (failures, affecting 1,468 messages)| Date ▲ | Messages |
|---|---|
| 7/14/2025 | 1 |
| 7/15/2025 | 1 |
| 7/16/2025 | 1 |
| 7/19/2025 | 1 |
| 7/22/2025 | 6 |
| 7/24/2025 | 5 |
| 7/25/2025 | 1 |
| 7/26/2025 | 3 |
| 7/28/2025 | 4 |
| 7/29/2025 | 8 |
| 7/30/2025 | 7 |
| 7/31/2025 | 5 |
| 8/25/2025 | 1 |
| 8/26/2025 | 1 |
| 8/27/2025 | 2 |
| 8/28/2025 | 3 |
| 8/29/2025 | 3 |
| 9/2/2025 | 6 |
| 9/3/2025 | 12 |
| 9/4/2025 | 6 |
| 9/8/2025 | 2 |
| 9/9/2025 | 4 |
| 9/11/2025 | 3 |
| 9/16/2025 | 3 |
| 9/18/2025 | 2 |
| 9/19/2025 | 1 |
| 9/22/2025 | 2 |
| 9/24/2025 | 1 |
| 9/25/2025 | 6 |
| 9/29/2025 | 5 |
| 9/30/2025 | 6 |
| 10/1/2025 | 2 |
| 10/2/2025 | 3 |
| 10/6/2025 | 3 |
| 10/8/2025 | 2 |
| 10/9/2025 | 2 |
| 10/10/2025 | 8 |
| 10/15/2025 | 2 |
| 10/20/2025 | 1 |
| 10/23/2025 | 2 |
| 10/24/2025 | 3 |
| 10/27/2025 | 2 |
| 10/28/2025 | 2 |
| 10/31/2025 | 3 |
| 11/3/2025 | 4 |
| 11/7/2025 | 6 |
| 11/10/2025 | 5 |
| 11/17/2025 | 3 |
| 11/18/2025 | 1 |
| 11/20/2025 | 2 |