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🇺🇸
jfz-abuse
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fail2ban: postfix-sasl
...
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Brute-Force
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Anonymous
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...
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Brute-Force
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🇩🇪
neverdown.eu
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140.228.24.94 (CA/Canada/-), 5 distributed smtpauth attacks on account [[email protected]] in the last ...
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140.228.24.94 (CA/Canada/-), 5 distributed smtpauth attacks on account [[email protected]] in the last 60 secs; Ports: *; Direction: inout; Trigger: LF_DISTATTACK; Logs: 2026-04-17 06:13:48 dovecot_login authenticator failed for H=([10.37.18.197]) [140.228.24.94]:28887: 535 Incorrect authentication data ([email protected])
2026-04-17 06:13:28 dovecot_plain authenticator failed for H=([10.26.18.95]) [91.193.6.188]:1449: 535 Incorrect authentication data ([email protected])
2026-04-17 06:13:57 dovecot_plain authenticator failed for H=([10.37.18.197]) [140.228.24.94]:13746: 535 Incorrect authentication data ([email protected])
2026-04-17 06:13:59 dovecot_login authenticator failed for H=([10.37.18.197]) [140.228.24.94]:13746: 535 Incorrect authentication data ([email protected])
2026-04-17 06:13:42 dovecot_plain authenticator failed for H=([10.37.18.197]) [140.228.24.94]:28887: 535 Incorrect authentication data ([email protected])
IP Addresses Blocked:
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Port Scan
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🇺🇸
Matthew Ping
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SMTP authentication brute force blocked by CSF/LFD on wp2.
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Email Spam
Brute-Force
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🇺🇸
bigscoots.com
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(smtpauth) Failed SMTP AUTH login from 140.228.24.94 (CA/Canada/-): 5 in the last 3600 secs; Ports: ...
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(smtpauth) Failed SMTP AUTH login from 140.228.24.94 (CA/Canada/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-04-16 22:08:05 dovecot_login authenticator failed for H=([10.37.18.197]) [140.228.24.94]:61467: 535 Incorrect authentication data ([email protected])
2026-04-16 22:35:58 dovecot_plain authenticator failed for H=([10.37.18.197]) [140.228.24.94]:18747: 535 Incorrect authentication data ([email protected])
2026-04-16 22:36:04 dovecot_login authenticator failed for H=([10.37.18.197]) [140.228.24.94]:18747: 535 Incorrect authentication data ([email protected])
2026-04-16 22:36:10 dovecot_plain authenticator failed for H=([10.37.18.197]) [140.228.24.94]:31297: 535 Incorrect authentication data ([email protected])
2026-04-16 22:36:16 dovecot_login authenticator failed for H=([10.37.18.197]) [140.228.24.94]:31297: 535 Incorrect authentication data ([email protected])
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Brute-Force
SSH
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🇵🇱
IT RDC
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Apr 17 04:23:51 rdcmail postfix/submission/smtpd[3983979]: warning: unknown[140.228.24.94]: SASL PLA ...
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Apr 17 04:23:51 rdcmail postfix/submission/smtpd[3983979]: warning: unknown[140.228.24.94]: SASL PLAIN authentication failed: authentication failure, [email protected]
Apr 17 04:23:51 rdcmail postfix/submission/smtpd[3983979]: warning: unknown[140.228.24.94]: SASL LOGIN authentication failed: authentication failure, [email protected]
Apr 17 04:23:52 rdcmail postfix/smtps/smtpd[3983984]: warning: unknown[140.228.24.94]: SASL LOGIN authentication failed: authentication failure, [email protected]
...
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Brute-Force
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🇳🇱
maxxsense
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(smtpauth) Failed SMTP AUTH login from 140.228.24.94 (US/United States/-)
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Brute-Force
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🇺🇸
bigscoots.com
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(smtpauth) Failed SMTP AUTH login from 140.228.24.94 (CA/Canada/-): 5 in the last 3600 secs; Ports: ...
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(smtpauth) Failed SMTP AUTH login from 140.228.24.94 (CA/Canada/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-04-16 21:53:07 dovecot_plain authenticator failed for H=([10.37.18.197]) [140.228.24.94]:30474: 535 Incorrect authentication data ([email protected])
2026-04-16 21:53:12 dovecot_plain authenticator failed for H=([10.37.18.197]) [140.228.24.94]:17129: 535 Incorrect authentication data ([email protected])
2026-04-16 21:53:12 dovecot_plain authenticator failed for H=([10.37.18.197]) [140.228.24.94]:29825: 535 Incorrect authentication data ([email protected])
2026-04-16 21:53:13 dovecot_plain authenticator failed for H=([10.37.18.197]) [140.228.24.94]:36763: 535 Incorrect authentication data ([email protected])
2026-04-16 21:55:56 dovecot_login authenticator failed for H=([10.37.18.197]) [140.228.24.94]:30474: 535 Incorrect authentication data
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Brute-Force
SSH
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🇫🇷
GabrielJST
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(smtpauth) Failed SMTP AUTH login from 140.228.24.94 (US/United States/-)
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Brute-Force
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🇧🇷
KingHost
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Brute-Force
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🇨🇿
lp
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Email account brute force: 6 attempts were recorded from 140.228.24.94
2026-03-12T17:16:32+01:00 war ...
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Email account brute force: 6 attempts were recorded from 140.228.24.94
2026-03-12T17:16:32+01:00 warning: unknown[140.228.24.94]: SASL PLAIN authentication failed: authentication failure, [email protected]
2026-03-12T17:16:32+01:00 warning: unknown[140.228.24.94]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-03-12T17:16:33+01:00 warning: unknown[140.228.24.94]: SASL PLAIN authentication failed: authentication failure, [email protected]
2026-03-12T17:16:34+01:00 warning: unknown[140.228.24.94]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-03-12T17:16:44+01:00 warning: unknown[140.228.24.94]: SASL PLAIN authentication failed: authentication failure, [email protected]
2026-03-12T17:16:45+01:00 warning: unknown[140.228.24.94]: SASL LOGIN
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Brute-Force
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🇳🇱
big-cloud.nl
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Unauthorized SMTP connection attempt
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Brute-Force
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Anonymous
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Fail2Ban report from Agria Informatika Ltd.
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Brute-Force
SSH
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Anonymous
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(smtpauth) Failed SMTP AUTH login from 140.228.24.94 (US/United States/-)
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Brute-Force
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🇺🇦
MakselPr
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Feb 24 17:59:26 mail postfix/smtpd[2046626]: warning: unknown[140.228.24.94]: SASL PLAIN authenticat ...
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Feb 24 17:59:26 mail postfix/smtpd[2046626]: warning: unknown[140.228.24.94]: SASL PLAIN authentication failed: (reason unavailable), [email protected]
Feb 24 17:59:32 mail postfix/smtpd[2046626]: warning: unknown[140.228.24.94]: SASL LOGIN authentication failed: (reason unavailable), [email protected]
...
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Brute-Force
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