Sh4mefulNetwork: ZIXCORP ⚠ Confounder
⚠ Confounder Detected: Zix Corporation (ZixCorp)
Email encryption and security solutions, acquired by Canadian information management company OpenText in December 2021. As of 2026, Zix operates as a subsidiary of OpenText, with its products integrated into the OpenText Cybersecurity portfolio.
Email encryption and security solutions, acquired by Canadian information management company OpenText in December 2021. As of 2026, Zix operates as a subsidiary of OpenText, with its products integrated into the OpenText Cybersecurity portfolio.
This page shows DMARC authentication failures originating from the ZIXCORP network. Learn more about this data.
Analysis
This network has contributed 4 unique IP addresses across 17 failed authentication events, accounting for 36 messages. Activity spans from May 10, 2024 to July 9, 2025, with peak volume in November 2024 (5 events). The top countries by failure volume are United States (100%). The most active source IPs from this network include 199.30.235.11 (9 failures), 199.30.235.91 (4 failures), 199.30.235.83 (3 failures). Failures from ZIXCORP (OpenText) are concentrated in a single country, which may indicate a targeted campaign or regionally hosted infrastructure.
Failures Detected from this Network
Showing 1-17 of 17 failures, affecting 36 messages| Date ▼ | Source IP | Country | Messages |
|---|---|---|---|
| 7/9/2025 | US | 1 | |
| 6/28/2025 | US | 2 | |
| 12/18/2024 | US | 1 | |
| 12/4/2024 | US | 1 | |
| 12/4/2024 | US | 1 | |
| 11/20/2024 | US | 3 | |
| 11/20/2024 | US | 1 | |
| 11/13/2024 | US | 1 | |
| 11/12/2024 | US | 3 | |
| 11/6/2024 | US | 1 | |
| 10/23/2024 | US | 3 | |
| 9/27/2024 | US | 2 | |
| 9/18/2024 | US | 3 | |
| 9/13/2024 | US | 3 | |
| 9/6/2024 | US | 4 | |
| 8/7/2024 | US | 4 | |
| 5/10/2024 | US | 2 |
Countries