This IP address has been reported a total of
134
times from
111 distinct
sources.
91.92.242.75 was first reported on
, and the most recent report was
.
In the last 60 days, the top reporter locations were:
Germany
with 40
reports;
France
with 28
reports;
United States of America
with 13
reports.
The most common categories in these recent reports were:
Brute-Force
87
times;
Email Spam
43
times;
Port Scan
38
times;
Hacking
14
times;
Web App Attack
8
times;
Other
16
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.
Oct 14 23:28:15 plsk postfix/smtpd[2691650]: warning: unknown[91.92.242.75]: SASL LOGIN authenticati ...
show moreOct 14 23:28:15 plsk postfix/smtpd[2691650]: warning: unknown[91.92.242.75]: SASL LOGIN authentication failed: authentication failure
Oct 14 23:28:16 plsk postfix/smtpd[2691709]: warning: unknown[91.92.242.75]: SASL LOGIN authentication failed: authentication failure
Oct 14 23:28:16 plsk postfix/smtpd[2691711]: warning: unknown[91.92.242.75]: SASL LOGIN authentication failed: authentication failure
...
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Brute-Force
Anonymous
2026-10-14T20:48:15.320089+00:00 mail postfix/smtpd[1735446]: lost connection after CONNECT from unk ...
show more2026-10-14T20:48:15.320089+00:00 mail postfix/smtpd[1735446]: lost connection after CONNECT from unknown[91.92.242.75]
2026-10-14T20:48:24.519888+00:00 mail postfix/smtpd[1735446]: NOQUEUE: reject: RCPT from unknown[91.92.242.75]: 450 4.7.1 <91-92-242-75.domain>: Helo command rejected: Host not found; from=<[email protected]> to=<[email protected]> proto=SMTP helo=<91-92-242-75.domain>
2026-10-14T20:48:30.591071+00:00 mail postfix/smtpd[1735455]: lost connection after EHLO from unknown[91.92.242.75]
...
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Unsolicited TCP connection from 91.92.242.75 to port 0 at 2026-10-14T17:02:41Z. Source IP completed ...
show moreUnsolicited TCP connection from 91.92.242.75 to port 0 at 2026-10-14T17:02:41Z. Source IP completed three-way handshake to non-public service on this host. Detected by automated intrusion monitoring.
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2026-10-14T15:33:33.354203+02:00 mail postfix/smtpd[2470870]: lost connection after CONNECT from unk ...
show more2026-10-14T15:33:33.354203+02:00 mail postfix/smtpd[2470870]: lost connection after CONNECT from unknown[91.92.242.75]
2026-10-14T15:33:33.836814+02:00 mail postfix/smtpd[2470863]: NOQUEUE: reject: RCPT from unknown[91.92.242.75]: 450 4.7.25 Client host rejected: cannot find your hostname, [91.92.242.75]; from=<[email protected]> to=<[email protected]> proto=SMTP helo=<91-92-242-75.domain>
2026-10-14T15:33:35.382877+02:00 mail postfix/smtpd[2472492]: lost connection after EHLO from unknown[91.92.242.75]
...
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Brute-Force
Email Spam
Anonymous
2026-10-14T13:31:21.436265+00:00 ubuntu-4gb-hel1-2 postfix/smtpd[3422976]: warning: unknown[91.92.24 ...
show more2026-10-14T13:31:21.436265+00:00 ubuntu-4gb-hel1-2 postfix/smtpd[3422976]: warning: unknown[91.92.242.75]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=info
...
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PortSentry honeypot: unsolicited TCP connection to closed decoy port 25 (SMTP) on a host running no ...
show morePortSentry honeypot: unsolicited TCP connection to closed decoy port 25 (SMTP) on a host running no such service. Automated port-scan detection at 2026-10-14T06:11:49Z.
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