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IP Abuse Reports for 123.121.75.126
This IP address has been reported a total of
15
times from
13 distinct
sources.
123.121.75.126 was first reported on
, and the most recent report was
.
In the last 60 days, the top reporter locations were:
Italy
with 3
reports;
United States of America
with 3
reports;
Germany
with 2
reports.
The most common categories in these recent reports were:
Brute-Force
13
times;
SSH
5
times;
Email Spam
3
times;
Exploited Host
3
times;
Port Scan
2
times;
Other
3
times.
Recent Reports
We have received reports of abusive activity from this IP address within the last week. It is
potentially still actively engaged in abusive activities.
Blocked by UFW (TCP on 2525)
Source port: 40188
TTL: 51
Packet length: 60
TOS: 0x00
This report (fo ...
show moreBlocked by UFW (TCP on 2525)
Source port: 40188
TTL: 51
Packet length: 60
TOS: 0x00
This report (for 123.121.75.126) was generated by:
https://github.com/sefinek/UFW-AbuseIPDB-Reporter
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Detected mail brute force attack from different servers
Brute-Force
Anonymous
2026-09-22T23:29:30.106805+03:00 shell.l3.fi postfix/smtpd[47549]: lost connection after STARTTLS fr ...
show more2026-09-22T23:29:30.106805+03:00 shell.l3.fi postfix/smtpd[47549]: lost connection after STARTTLS from unknown[123.121.75.126]
2026-09-22T23:29:35.399764+03:00 shell.l3.fi postfix/smtpd[47513]: warning: unknown[123.121.75.126]: SASL PLAIN authentication failed: (reason unavailable), sasl_username=kivi24
...
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This address keeps trying to deliver mail our server rejects — spam, or a walk through mailboxes tha ...
show moreThis address keeps trying to deliver mail our server rejects — spam, or a walk through mailboxes that do not exist to find valid addresses (directory harvesting). Refusal after refusal from one address is abuse, not a mistake; blocked. Please check the machine for spamware or a compromised account. | 2026-09-21 15:37 UTC
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2026-09-19 13:09:43,523 quad proftpd[3760436] 2a03:4000:3e:312:360a:466c:8ea1:45b9 (123.121.75.126[1 ...
show more2026-09-19 13:09:43,523 quad proftpd[3760436] 2a03:4000:3e:312:360a:466c:8ea1:45b9 (123.121.75.126[123.121.75.126]): USER admin: no such user found from 123.121.75.126 [123.121.75.126] to 2.56.97.107:22
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2026-09-18T01:41:17.072978+02:00 whmcs330411280 sshd-session[201058]: Invalid user user from 123.121 ...
show more2026-09-18T01:41:17.072978+02:00 whmcs330411280 sshd-session[201058]: Invalid user user from 123.121.75.126 port 53504
...
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