This IP address has been reported a total of
24
times from
23 distinct
sources.
158.173.155.163 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.
XORP (mailcow netfilter): 2x fail2ban matched-rule bans in 24h. Automated report from log_check_ipta ...
show moreXORP (mailcow netfilter): 2x fail2ban matched-rule bans in 24h. Automated report from log_check_iptables_generator.sh (xorp.hu)
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2026-09-16T00:10:53.390635+02:00 srv03 postfix/submission/smtpd[2379638]: lost connection after CONN ...
show more2026-09-16T00:10:53.390635+02:00 srv03 postfix/submission/smtpd[2379638]: lost connection after CONNECT from unknown[158.173.155.163]
2026-09-16T00:10:55.413897+02:00 srv03 postfix/submission/smtpd[2379638]: warning: unknown[158.173.155.163]: SASL LOGIN authentication failed: (reason unavailable), [email protected]
2026-09-16T00:10:55.448400+02:00 srv03 postfix/submission/smtpd[2379638]: lost connection after AUTH from unknown[158.173.155.163]
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2026-09-15T23:43:12.264636+02:00 mail postfix/submission/smtpd[1584028]: lost connection after CONNE ...
show more2026-09-15T23:43:12.264636+02:00 mail postfix/submission/smtpd[1584028]: lost connection after CONNECT from unknown[158.173.155.163]
2026-09-15T23:43:14.375183+02:00 mail postfix/submission/smtpd[1584028]: warning: unknown[158.173.155.163]: SASL LOGIN authentication failed: (reason unavailable), [email protected]
2026-09-15T23:43:14.432270+02:00 mail postfix/submission/smtpd[1584028]: disconnect from unknown[158.173.155.163] ehlo=2 starttls=1 auth=0/1 commands=3/4
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Fail2Ban report from jail 'postfix': 2026-09-15T23:38:04.094966+02:00 mail postfix/submission/smtpd[ ...
show moreFail2Ban report from jail 'postfix': 2026-09-15T23:38:04.094966+02:00 mail postfix/submission/smtpd[1607439]: warning: unknown[158.173.155.163]: SASL LOGIN authentication failed: (reason unavailable), [email protected]
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Sep 15 23:29:53 ksol postfix/submission-587/smtpd[790]: NOQUEUE: reject: CONNECT from unknown[158.17 ...
show moreSep 15 23:29:53 ksol postfix/submission-587/smtpd[790]: NOQUEUE: reject: CONNECT from unknown[158.173.155.163]:47926: 554 5.7.1 Service unavailable; Client host [158.173.155.163] blocked using sbl-xbl.spamhaus.org; Listed by XBL, see https://check.spamhaus.org/query/ip/158.173.155.163; proto=SMTP
Sep 15 23:29:53 ksol postfix/submission-587/smtpd[745]: NOQUEUE: reject: CONNECT from unknown[158.173.155.163]:47796: 554 5.7.1 Service unavailable; Client host [158.173.155.163] blocked using sbl-xbl.spamhaus.org; Listed by XBL, see https://check.spamhaus.org/query/ip/158.173.155.163; proto=SMTP
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Email account brute force: 5 attempts were recorded from 158.173.155.163
2026-09-15T22:55:29+02:00 w ...
show moreEmail account brute force: 5 attempts were recorded from 158.173.155.163
2026-09-15T22:55:29+02:00 warning: unknown[158.173.155.163]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-09-15T22:56:02+02:00 warning: unknown[158.173.155.163]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-09-15T22:59:44+02:00 warning: unknown[158.173.155.163]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-09-15T22:59:44+02:00 warning: unknown[158.173.155.163]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-09-15T22:59:44+02:00 warning: unknown[158.173.155.163]: SASL LOGIN authentication failed: authentication failure, [email protected]show less
Brute-Force
Anonymous
2026-09-15T23:18:44.467517+02:00 host postfix/smtpd[2128253]: lost connection after CONNECT from unk ...
show more2026-09-15T23:18:44.467517+02:00 host postfix/smtpd[2128253]: lost connection after CONNECT from unknown[158.173.155.163]
2026-09-15T23:18:46.700795+02:00 host postfix/smtpd[2128253]: warning: unknown[158.173.155.163]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-09-15T23:18:46.731271+02:00 host postfix/smtpd[2128253]: lost connection after AUTH from unknown[158.173.155.163]
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