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52.103.33.11

Recent Activity

Abuse confidence score ?

19% Caution

23 reports

12 reporters · latest 3 days ago

ISP	Microsoft Corporation
Usage Type	Data Center/Web Hosting/Transit
ASN	AS8075
Hostname(s)	mail-westeuropeazolkn19013011.outbound.protection.outlook.com
Domain Name	microsoft.com
Country	🇳🇱 Netherlands
City	Amsterdam, North Holland

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IP Abuse Reports for 52.103.33.11

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This IP address has been reported a total of 23 times from 12 distinct sources. 52.103.33.11 was first reported on November 21st 2024, and the most recent report was 3 days ago. In the last 60 days, the top reporter locations were: Switzerland with 6 reports; Canada with 1 report; Luxembourg with 1 report. The most common categories in these recent reports were: Email Spam 6 times; Brute-Force 2 times; Port Scan 1 time; Exploited Host 1 time.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇨🇭 Origon	2026-10-05 08:44:22 (3 days ago)	NOQUEUE - IP: 52.103.33.11 - Oct 5 10:44:22 plesk postfix/smtpd[3714808]: NOQUEUE: reject: RCPT fro ... show more NOQUEUE - IP: 52.103.33.11 - Oct 5 10:44:22 plesk postfix/smtpd[3714808]: NOQUEUE: reject: RCPT from mail-westeuropeazolkn19013011.outbound.protection.outlook.com[52.103.33.11]: 554 5.7.1 Service unavailable; Client host [52.103.33.11] blocked using all.s5h.net; See http://s5h.net/rbl; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<AM0PR02CU008.outbound.protection.outlook.com> show less	Email Spam
🇨🇭 Origon	2026-10-02 06:54:25 (1 week ago)	NOQUEUE - IP: 52.103.33.11 - Oct 2 08:54:24 plesk postfix/smtpd[3601790]: NOQUEUE: reject: RCPT fro ... show more NOQUEUE - IP: 52.103.33.11 - Oct 2 08:54:24 plesk postfix/smtpd[3601790]: NOQUEUE: reject: RCPT from mail-westeuropeazolkn19013011.outbound.protection.outlook.com[52.103.33.11]: 554 5.7.1 Service unavailable; Client host [52.103.33.11] blocked using all.s5h.net; See http://s5h.net/rbl; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<AM0PR02CU008.outbound.protection.outlook.com> show less	Email Spam
🇨🇭 Origon	2026-09-28 17:15:36 (1 week ago)	NOQUEUE - IP: 52.103.33.11 - Sep 28 19:15:36 plesk postfix/smtpd[1425495]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 52.103.33.11 - Sep 28 19:15:36 plesk postfix/smtpd[1425495]: NOQUEUE: reject: RCPT from mail-westeuropeazolkn19013011.outbound.protection.outlook.com[52.103.33.11]: 554 5.7.1 Service unavailable; Client host [52.103.33.11] blocked using all.s5h.net; See http://s5h.net/rbl; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<AM0PR02CU008.outbound.protection.outlook.com> show less	Email Spam
🇨🇭 Origon	2026-09-23 08:02:37 (2 weeks ago)	NOQUEUE - IP: 52.103.33.11 - Sep 23 10:02:36 plesk postfix/smtpd[1428579]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 52.103.33.11 - Sep 23 10:02:36 plesk postfix/smtpd[1428579]: NOQUEUE: reject: RCPT from mail-westeuropeazolkn19013011.outbound.protection.outlook.com[52.103.33.11]: 554 5.7.1 Service unavailable; Client host [52.103.33.11] blocked using all.s5h.net; See http://s5h.net/rbl; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<AM0PR02CU008.outbound.protection.outlook.com> show less	Email Spam
Anonymous	2026-09-21 15:52:58 (2 weeks ago)	SMTP scanner - relay access denied	Brute-Force Exploited Host
🇨🇭 Origon	2026-09-12 12:18:39 (3 weeks ago)	NOQUEUE - IP: 52.103.33.11 - Sep 12 14:18:39 plesk postfix/smtpd[1804671]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 52.103.33.11 - Sep 12 14:18:39 plesk postfix/smtpd[1804671]: NOQUEUE: reject: RCPT from mail-westeuropeazolkn19013011.outbound.protection.outlook.com[52.103.33.11]: 554 5.7.1 Service unavailable; Client host [52.103.33.11] blocked using all.s5h.net; See http://s5h.net/rbl; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<AM0PR02CU008.outbound.protection.outlook.com> show less	Email Spam
Anonymous	2026-09-11 03:09:39 (4 weeks ago)	2 Login Attempts	Port Scan Brute-Force
🇨🇭 Origon	2026-09-08 12:06:16 (1 month ago)	NOQUEUE - IP: 52.103.33.11 - Sep 8 14:06:16 plesk postfix/smtpd[3549134]: NOQUEUE: reject: RCPT fro ... show more NOQUEUE - IP: 52.103.33.11 - Sep 8 14:06:16 plesk postfix/smtpd[3549134]: NOQUEUE: reject: RCPT from mail-westeuropeazolkn19013011.outbound.protection.outlook.com[52.103.33.11]: 554 5.7.1 Service unavailable; Client host [52.103.33.11] blocked using all.s5h.net; See http://s5h.net/rbl; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<AM0PR02CU008.outbound.protection.outlook.com> show less	Email Spam
🇹🇷 SeczarSecureOps	2026-07-23 09:47:12 (2 months ago)	Seczar SecureOps — FortiMail virus: 1 virus-laden message(s) — sender(s): [email protected]	Phishing Email Spam
🇨🇭 Origon	2026-06-16 06:52:02 (3 months ago)	NOQUEUE - IP: 52.103.33.11 - Jun 16 08:52:02 plesk postfix/smtpd[3335244]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 52.103.33.11 - Jun 16 08:52:02 plesk postfix/smtpd[3335244]: NOQUEUE: reject: RCPT from mail-westeuropeazolkn19013011.outbound.protection.outlook.com[52.103.33.11]: 454 4.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<AM0PR02CU008.outbound.protection.outlook.com> show less	Email Spam
🇺🇸 xmission.com	2026-06-05 13:47:23 (4 months ago)	Sourced 1 spam messages over 3x XMissions threshold. Highest score: 26.5. Latest msgid suffix: ...-0 ... show more Sourced 1 spam messages over 3x XMissions threshold. Highest score: 26.5. Latest msgid suffix: ...-005eYZ-I1 show less	Email Spam
🇨🇭 Origon	2026-05-19 14:33:06 (4 months ago)	NOQUEUE - IP: 52.103.33.11 - May 19 16:33:06 plesk postfix/smtpd[3750797]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 52.103.33.11 - May 19 16:33:06 plesk postfix/smtpd[3750797]: NOQUEUE: reject: RCPT from mail-westeuropeazolkn19013011.outbound.protection.outlook.com[52.103.33.11]: 454 4.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<AM0PR02CU008.outbound.protection.outlook.com> show less	Email Spam
🇨🇭 Origon	2026-04-21 03:33:46 (5 months ago)	NOQUEUE - IP: 52.103.33.11 - Apr 21 05:33:46 plesk postfix/smtpd[3755576]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 52.103.33.11 - Apr 21 05:33:46 plesk postfix/smtpd[3755576]: NOQUEUE: reject: RCPT from mail-westeuropeazolkn19013011.outbound.protection.outlook.com[52.103.33.11]: 454 4.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<AM0PR02CU008.outbound.protection.outlook.com> show less	Email Spam
🇬🇧 Ged	2026-03-24 22:07:43 (6 months ago)	Spam.	Email Spam
🇵🇱 Wiktor Grecki	2026-02-11 12:11:00 (7 months ago)	Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=52.103.33.11; helo=am0pr02cu008.outbound. ... show more Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=52.103.33.11; helo=am0pr02cu008.outbound.protection.outlook.com; [email protected]; receiver=<UNKNOWN> Authentication-Results: mx.poczta.onet.pl; bimi=skipped (DMARC Policy is not at enforcement); dkim=pass (2048-bit rsa key sha256) header.d=hotmail.com [email protected] header.b=RzD9vc5y header.a=rsa-sha256 header.s=selector1; dmarc=pass policy.published-domain-policy=none policy.applied-disposition=none policy.evaluated-disposition=none (p=none,d=none,d.eval=none) policy.policy-from=p header.from=hotmail.com; iprev=pass smtp.remote-ip=52.103.33.11 (mail-westeuropeazolkn19013011.outbound.protection.outlook.com); spf=pass [email protected] smtp.helo=AM0PR02CU008.outbound.protection.outlook.com; show less	Phishing Email Spam

Showing 1 to 15 of 23 reports

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