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AbuseIPDB » 52.103.11.79

52.103.11.79 was found in our database!

This IP was reported 32 times. Confidence of Abuse is 0%: ?

ISP	Microsoft Corporation
Usage Type	Data Center/Web Hosting/Transit
ASN	AS8075
Hostname(s)	mail-eastusazolkn19012079.outbound.protection.outlook.com
Domain Name	microsoft.com
Country	🇺🇸 United States of America
City	Dulles Town Center, Virginia

IP info including ISP, Usage Type, and Location provided by IPInfo. Updated weekly.

Report 52.103.11.79

Whois 52.103.11.79

IP Abuse Reports for 52.103.11.79:

This IP address has been reported a total of 32 times from 11 distinct sources. 52.103.11.79 was first reported on September 19th 2025, and the most recent report was 1 month ago.

Old Reports: The most recent abuse report for this IP address is from 1 month ago . It is possible that this IP is no longer involved in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇨🇭 Origon	2026-09-08 12:10:46 (1 month ago)	NOQUEUE - IP: 52.103.11.79 - Sep 8 14:10:46 plesk postfix/smtpd[3521288]: NOQUEUE: reject: RCPT fro ... show more NOQUEUE - IP: 52.103.11.79 - Sep 8 14:10:46 plesk postfix/smtpd[3521288]: NOQUEUE: reject: RCPT from mail-eastusazolkn19012079.outbound.protection.outlook.com[52.103.11.79]: 554 5.7.1 Service unavailable; Client host [52.103.11.79] blocked using all.s5h.net; See http://s5h.net/rbl; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<BL0PR03CU003.outbound.protection.outlook.com> show less	Email Spam
🇬🇺 jimdunn	2026-06-24 17:22:18 (3 months ago)	Spam email received in Outlook.com Junk Email folder. Likely originating IP: 52.103.11.79 Origin sou ... show more Spam email received in Outlook.com Junk Email folder. Likely originating IP: 52.103.11.79 Origin source header: Authentication-Results Origin evidence: sender IP is 52.103.11.79 ReceivedDateTime: 05/27/2026 20:03:43 InternetMessageId: <SN6PR06MB51671D4EF8649FDF3F219F58AF082@SN6PR06MB5167.namprd06.prod.outlook.com> Selection reason: Selected explicit public sender IP from Authentication-Results Known-good relay/IP/CIDR filtering was enabled. show less	Email Spam
Anonymous	2026-06-20 03:07:03 (3 months ago)	2 Login Attempts	Port Scan Brute-Force
Anonymous	2026-06-17 06:07:08 (3 months ago)	5 Login Attempts	Port Scan Brute-Force
🇵🇱 Wiktor Grecki	2026-06-11 09:00:00 (4 months ago)	Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=52.103.11.79; helo=bl0pr03cu003.outbound. ... show more Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=52.103.11.79; helo=bl0pr03cu003.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=AhMsfOZs 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=52.103.11.79 (mail-eastusazolkn19012079.outbound.protection.outlook.com); spf=pass [email protected] smtp.helo=BL0PR03CU003.outbound.protection.outlook.com; show less	Email Spam Phishing
🇺🇸 DiodeDave	2026-06-11 05:08:32 (4 months ago)	Attempted access after blacklisting	Email Spam
Anonymous	2026-06-05 11:33:00 (4 months ago)	E-mail spam at 2026-06-05 11:33 from [email protected] with score 10	Email Spam
🇫🇷 AHr	2026-06-02 06:00:05 (4 months ago)	SPAM	Email Spam
🇨🇭 Origon	2026-04-15 07:45:58 (6 months ago)	NOQUEUE - IP: 52.103.11.79 - Apr 15 09:45:58 plesk postfix/smtpd[1330480]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 52.103.11.79 - Apr 15 09:45:58 plesk postfix/smtpd[1330480]: NOQUEUE: reject: RCPT from mail-eastusazolkn19012079.outbound.protection.outlook.com[52.103.11.79]: 554 5.7.1 Service unavailable; Client host [52.103.11.79] blocked using bl.spamcop.net; Blocked - see https://www.spamcop.net/bl.shtml?52.103.11.79; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<BL0PR03CU003.outbound.protection.outlook.com> show less	Email Spam
🇺🇸 DiodeDave	2026-04-08 04:05:49 (6 months ago)	Attempted access after blacklisting	Email Spam
Anonymous	2025-12-22 10:43:00 (9 months ago)	E-mail spam at 2025-12-22 10:43 from [email protected] with score 9	Email Spam
🇦🇷 lzambrana	2025-11-11 11:12:10 (11 months ago)	Spoofing attempts and mass spam have been detected. Blocked by ASSP anti-spam. Reason: DenyStrict. B ... show more Spoofing attempts and mass spam have been detected. Blocked by ASSP anti-spam. Reason: DenyStrict. Block attempts: 1. show less	FTP Brute-Force Brute-Force
🇨🇭 Origon	2025-11-04 11:56:41 (11 months ago)	NOQUEUE - IP: 52.103.11.79 - Nov 4 12:56:41 plesk postfix/smtpd[425655]: NOQUEUE: reject: RCPT from ... show more NOQUEUE - IP: 52.103.11.79 - Nov 4 12:56:41 plesk postfix/smtpd[425655]: NOQUEUE: reject: RCPT from mail-eastusazolkn19012079.outbound.protection.outlook.com[52.103.11.79]: 554 5.7.1 Service unavailable; Client host [52.103.11.79] blocked using bl.spamcop.net; Blocked - see https://www.spamcop.net/bl.shtml?52.103.11.79; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<BL0PR03CU003.outbound.protection.outlook.com> show less	Email Spam
🇦🇷 lzambrana	2025-10-30 11:50:33 (11 months ago)	Spoofing attempts and mass spam have been detected. Blocked by ASSP anti-spam. Reason: DenyStrict. B ... show more Spoofing attempts and mass spam have been detected. Blocked by ASSP anti-spam. Reason: DenyStrict. Block attempts: 1. show less	FTP Brute-Force Brute-Force
🇦🇷 lzambrana	2025-10-30 10:45:43 (11 months ago)	Spoofing attempts and mass spam have been detected. Blocked by ASSP anti-spam. Reason: DenyStrict. B ... show more Spoofing attempts and mass spam have been detected. Blocked by ASSP anti-spam. Reason: DenyStrict. Block attempts: 5. show less	FTP Brute-Force Brute-Force

Showing 1 to 15 of 32 reports

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