Sh4mefulIP Address: 67.231.157.15 ⚠ Network Confounder
This page shows DMARC authentication failure data for this IP address. Learn more about this data.
Geolocation Information
- Country:
- US United States
- Coordinates:
- 37.751, -97.822
WHOIS Information
- Network Name:
- PROOFPOINT-NET-NORTH-AMERICA
- CIDR:
67.231.144.0/20- Owner:
- Proofpoint, Inc.
- Org ID:
PROOF- Address:
- 925 W Maude Ave, Sunnyvale, CA 94085
- Reverse DNS:
-
mx0b-00164701.pphosted.com
Last updated: 5/24/2026
Analysis
This IP is classified as a confounder: Proofpoint Email Security. Failures observed from this source are expected artifacts of legitimate mail-handling behavior, typically email forwarding or mailing-list processing, and do not indicate spoofing attempts.
The host is operated by Proofpoint, Inc and geolocates to United States. Its presence in DMARC aggregate reports is an artifact of how forwarded mail interacts with SPF and DKIM authentication, not a sign of abuse originating from this address.
Administrators observing this IP in their DMARC aggregate reports should not block or treat it as hostile. Proofpoint is an email security gateway. Mail that passes through Proofpoint for scanning may appear in DMARC reports with Proofpoint relay addresses. Consult your Proofpoint configuration to ensure proper SPF alignment for your mail stream.
Network Confounder: Proofpoint Email Security
Proofpoint network identifier
Network Topology
External Reputation Lookups
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Nearby IPs
Other IPs in the 67.231.157.0/24 range observed failing DMARC:
67.231.157.124 (14 failures), 67.231.157.48 (7 failures), 67.231.157.174 (2 failures)