This IP address has been reported a total of
617
times from
49 distinct
sources.
45.58.52.21 was first reported on
, and the most recent report was
.
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.
Reporter
IoA Timestamp (UTC)
Comment
Categories
Anonymous
2026-06-15T21:17:14.549798+02:00 host postfix/smtpd[2114402]: NOQUEUE: reject: RCPT from classa.live ...
show more2026-06-15T21:17:14.549798+02:00 host postfix/smtpd[2114402]: NOQUEUE: reject: RCPT from classa.live[45.58.52.21]: 554 5.7.1 Service unavailable; Client host [45.58.52.21] blocked using zen.spamhaus.org; Listed by CSS, see https://check.spamhaus.org/query/ip/45.58.52.21; from=<> to=<[email protected]> proto=ESMTP helo=<classa.live>
...
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Brute-Force
Anonymous
Kept connecting and disconnecting without issuing any commands
2026-06-13T18:24:13.008870+02:00 host postfix/smtpd[1188318]: NOQUEUE: reject: RCPT from classa.live ...
show more2026-06-13T18:24:13.008870+02:00 host postfix/smtpd[1188318]: NOQUEUE: reject: RCPT from classa.live[45.58.52.21]: 554 5.7.1 Service unavailable; Client host [45.58.52.21] blocked using zen.spamhaus.org; Listed by CSS, see https://check.spamhaus.org/query/ip/45.58.52.21; from=<> to=<[email protected]> proto=ESMTP helo=<classa.live>
...
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2026-06-13T08:49:13.601979+02:00 host postfix/smtpd[1058011]: NOQUEUE: reject: RCPT from classa.live ...
show more2026-06-13T08:49:13.601979+02:00 host postfix/smtpd[1058011]: NOQUEUE: reject: RCPT from classa.live[45.58.52.21]: 554 5.7.1 Service unavailable; Client host [45.58.52.21] blocked using zen.spamhaus.org; Listed by CSS, see https://check.spamhaus.org/query/ip/45.58.52.21; from=<> to=<[email protected]> proto=ESMTP helo=<classa.live>
2026-06-13T08:49:13.849867+02:00 host postfix/smtpd[1058011]: NOQUEUE: reject: RCPT from classa.live[45.58.52.21]: 554 5.7.1 Service unavailable; Client host [45.58.52.21] blocked using zen.spamhaus.org; Listed by CSS, see https://check.spamhaus.org/query/ip/45.58.52.21; from=<> to=<[email protected]> proto=ESMTP helo=<classa.live>
...
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(smtp-25-to-rcpt-from-2007-leak) Recipient address has been leaked in 2007 45.58.52.21 (US/United St ...
show more(smtp-25-to-rcpt-from-2007-leak) Recipient address has been leaked in 2007 45.58.52.21 (US/United States/classa.live)
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(smtp-25-to-rcpt-from-2007-leak) Recipient address has been leaked in 2007 45.58.52.21 (US/United St ...
show more(smtp-25-to-rcpt-from-2007-leak) Recipient address has been leaked in 2007 45.58.52.21 (US/United States/rationalisations.folkanimals.com)
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NOQUEUE - IP: 45.58.52.21 - Jun 9 14:47:11 plesk postfix/smtpd[4050391]: NOQUEUE: reject: RCPT from ...
show moreNOQUEUE - IP: 45.58.52.21 - Jun 9 14:47:11 plesk postfix/smtpd[4050391]: NOQUEUE: reject: RCPT from unknown[45.58.52.21]: 554 5.7.1 Service unavailable; Client host [45.58.52.21] blocked using dnsbl-1.uceprotect.net; IP 45.58.52.21 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=45.58.52.21; from=<> to=<REDACTED@REDACTED> proto=ESMTP helo=<stevebicknell.co.uk>
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Email Spam
Showing 1 to
15
of 617 reports
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