This IP address has been reported a total of
22
times from
21 distinct
sources.
131.143.104.144 was first reported on
, and the most recent report was
.
In the last 60 days, the top reporter locations were:
Germany
with 4
reports;
Indonesia
with 3
reports;
Netherlands
with 3
reports.
The most common categories in these recent reports were:
Brute-Force
21
times;
Email Spam
3
times;
Hacking
3
times;
Exploited Host
3
times;
Port Scan
1
time.
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.
(postfix-unknown) Failed postfix unknown login with username [redacted] from 131.143.104.144 (US/Uni ...
show more(postfix-unknown) Failed postfix unknown login with username [redacted] from 131.143.104.144 (US/United States/-)
show less
Hacking
Anonymous
2026-10-04 00:57:12.243 [93317] dovecot_login authenticator failed for H=([103.163.106.186]) [131.14 ...
show more2026-10-04 00:57:12.243 [93317] dovecot_login authenticator failed for H=([103.163.106.186]) [131.143.104.144]:33016 I=[192.168.1.220]:25 Ci=93317: 535 Incorrect authentication data (set_id=glasses21)
...
show less
2026-10-04T15:55:26.441410+11:00 mail1 postfix/submissions/smtpd[2424745]: lost connection after AUT ...
show more2026-10-04T15:55:26.441410+11:00 mail1 postfix/submissions/smtpd[2424745]: lost connection after AUTH from unknown[131.143.104.144]
2026-10-04T16:50:37.798909+11:00 mail1 postfix/submissions/smtpd[2436096]: lost connection after AUTH from unknown[131.143.104.144]
2026-10-04T16:56:04.207261+11:00 mail1 postfix/submissions/smtpd[2436076]: lost connection after AUTH from unknown[131.143.104.144]
...
show less
Suspicious activity detected from IP 131.143.104.144 based on mailserver logs.
Sample logs:
2026-10- ...
show moreSuspicious activity detected from IP 131.143.104.144 based on mailserver logs.
Sample logs:
2026-10-04 13:18:26,755 INFO [qtp2102534528-607242] [name=**@*.id;ip=172.16.0.182;oip=131.143.104.144;oport=58925;oproto=smtp;port=32812;soapId=3666b98a;] SoapEngine - handler exception: authentication failed for [**], LDAP error: - unable to ldap authenticate: invalid credentials
2026-10-04 13:18:26,755 INFO [qtp2102534528-607242] [name=**@*.id;ip=172.16.0.182;oip=131.143.104.144;oport=58925;oproto=smtp;port=32812;soapId=3666b98a;] soap - AuthRequest elapsed=5
2026-10-04 13:19:28,808 INFO [qtp2102534528-607208] [ip=172.16.0.182;oip=131.143.104.144;oport=59720;oproto=smtp;port=53790;soapId=3666b999;] account - Error occurred during authentication: authentication failed for [**]. Reason: account not found.
2026-10-04 13:19:28,808 INFO [qtp2102534528-607208] [ip=172.16.0.182;oip=131.143.104.144;oport=59720;oproto=smtp;port=53790;soapId=3666b999;] SoapEngine - handler exception: authentication
show less
