Owner: Proofpoint

Owner Information

Networks:: PROOFPOINT-NET-NORTH-AMERICA PROOF UK-PROOFPOINT-20151223 pfptnl
Network Count:: 4

Countries:: NL GB US

Failures Detected from this Owner

Show Confoundersⓘ

Showing 1-50 of 445 failures, affecting 657 messages

Date ▼	Network	Source IP	Country	Messages
4/7/2026	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.133.153	US	1
3/24/2026	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.133.153	US	1
3/10/2026	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.137.153	US	1
2/24/2026	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.137.153	US	1
1/30/2026	PROOFPOINT-NET-NORTH-AMERICA ⚠	67.231.154.183	US	1
1/28/2026	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.133.153	US	1
1/14/2026	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.137.153	US	1
1/14/2026	PROOFPOINT-NET-NORTH-AMERICA ⚠	67.231.154.184	US	1
1/8/2026	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.129.48	US	1
1/7/2026	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.133.153	US	1
12/16/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.133.153	US	1
12/11/2025	UK-PROOFPOINT-20151223 ⚠	185.132.180.145	GB	1
12/10/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.137.153	US	1
12/3/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.137.153	US	1
12/3/2025	PROOF ⚠	205.220.183.129	US	1
12/2/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.137.153	US	1
11/20/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.137.153	US	1
11/19/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.137.153	US	1
11/11/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.133.153	US	1
10/21/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.133.153	US	1
10/10/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	67.231.154.183	US	1
10/8/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.133.153	US	1
10/7/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.137.153	US	1
10/3/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	67.231.154.184	US	1
10/2/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.129.48	US	1
10/1/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.133.153	US	1
10/1/2025	UK-PROOFPOINT-20151223 ⚠	185.132.180.145	GB	1
10/1/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	208.84.65.209	US	1
10/1/2025	PROOF ⚠	205.220.171.129	US	1
9/30/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.133.153	US	1
9/26/2025	PROOF ⚠	205.220.171.129	US	1
9/26/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.129.52	US	1
9/26/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	208.86.201.149	US	1
9/26/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.129.52	US	1
9/26/2025	PROOF ⚠	205.220.171.129	US	1
9/26/2025	pfptnl ⚠	185.183.28.103	US	1
9/26/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	208.86.201.149	US	1
9/26/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.129.49	US	1
9/24/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	67.231.154.184	US	1
9/24/2025	PROOF ⚠	205.220.183.129	US	1
9/24/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	67.231.154.183	US	1
9/24/2025	PROOF ⚠	205.220.171.129	US	1
9/24/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	208.84.65.209	US	1
9/24/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	208.86.201.149	US	1
9/23/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.137.153	US	1
9/19/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.129.48	US	1
9/19/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	208.84.65.209	US	1
9/18/2025	PROOFPOINT-NET-NORTH-AMERICA ⚠	148.163.129.52	US	1
9/17/2025	PROOF ⚠	205.220.183.129	US	2
9/17/2025	PROOF ⚠	205.220.183.129	US	1

Networks

Countries