🇩🇪
Paul Smith
2026-09-12 22:18:02
(11 hours ago)
Email Auth Brute force attack 6/6 in last day
Brute-Force
🇩🇪
tall1oN
2026-09-12 21:31:53
(12 hours ago)
2026-09-12T19:49:20.743328+02:00 kenny dovecot: auth-worker(3932251): conn unix:auth-worker (pid=371 ...
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2026-09-12T19:49:20.743328+02:00 kenny dovecot: auth-worker(3932251): conn unix:auth-worker (pid=3713842,uid=107): auth-worker<5>: sql([email protected] ,175.19.52.240): unknown user
2026-09-12T19:49:22.811634+02:00 kenny dovecot: auth-worker(3932251): conn unix:auth-worker (pid=3713842,uid=107): auth-worker<6>: pam([email protected] ,175.19.52.240): pam_authenticate() failed: Authentication failure (Password mismatch?)
2026-09-12T23:31:52.448937+02:00 kenny dovecot: auth-worker(3983205): conn unix:auth-worker (pid=3713842,uid=107): auth-worker<1>: sql([email protected] ,175.19.52.240): unknown user
...
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Brute-Force
Email Spam
Anonymous
2026-09-12 18:59:15
(15 hours ago)
Port scan and brute force attack
Port Scan
Brute-Force
🇸🇮
basing
2026-09-12 16:26:53
(17 hours ago)
2026-09-12 17:26:53 bs SASL PLAIN auth failed: rhost=175.19.52.240...
Brute-Force
🇩🇪
digico_mt
2026-09-12 16:13:26
(17 hours ago)
Sep 12 18:13:26 digico postfix/submission/smtpd[134592]: warning: unknown[175.19.52.240]: SASL LOGIN ...
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Sep 12 18:13:26 digico postfix/submission/smtpd[134592]: warning: unknown[175.19.52.240]: SASL LOGIN authentication failed: (reason unavailable), [email protected]
Sep 12 18:13:26 digico postfix/submission/smtpd[134592]: lost connection after AUTH from unknown[175.19.52.240]
Sep 12 18:13:26 digico postfix/submission/smtpd[134592]: disconnect from unknown[175.19.52.240] ehlo=2 starttls=1 auth=0/1 commands=3/4
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Port Scan
🇵🇦
iphezimbra
2026-09-12 15:45:46
(18 hours ago)
Fail2Ban reported IP from jail zimbra-smtp on <hostname>
Brute-Force
SSH
🇯🇵
ki3
2026-09-12 15:15:08
(18 hours ago)
Fail2Ban: Postfix Attack 175.19.52.240 1789226107.0(JST)
Email Spam
Brute-Force
🇩🇪
lister171254
2026-09-12 12:33:46
(21 hours ago)
2026-09-12T14:33:46.223528+02:00 thelists postfix/submission/smtpd[381325]: warning: unknown[175.19. ...
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2026-09-12T14:33:46.223528+02:00 thelists postfix/submission/smtpd[381325]: warning: unknown[175.19.52.240]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=llsubscr
...
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Hacking
🇩🇪
itak
2026-09-12 12:30:47
(21 hours ago)
SMTP SASL Brute-Force Attack
Port Scan
Hacking
Brute-Force
🇫🇷
dwmp
2026-09-12 11:33:04
(22 hours ago)
Sep 12 11:46:15 webcore postfix/smtpd[313920]: warning: unknown[175.19.52.240]: SASL LOGIN authentic ...
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Sep 12 11:46:15 webcore postfix/smtpd[313920]: warning: unknown[175.19.52.240]: SASL LOGIN authentication failed: authentication failure
Sep 12 12:04:29 webcore postfix/smtpd[313035]: warning: unknown[175.19.52.240]: SASL LOGIN authentication failed: authentication failure
Sep 12 13:33:03 webcore postfix/smtpd[345544]: warning: unknown[175.19.52.240]: SASL LOGIN authentication failed: authentication failure
...
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Brute-Force
🇺🇸
mnogoweb
2026-09-12 11:25:16
(22 hours ago)
(smtpauth) Failed SMTP AUTH login from 175.19.52.240 (CN/China/240.52.19.175.adsl-pool.jlccptt.net.c ...
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(smtpauth) Failed SMTP AUTH login from 175.19.52.240 (CN/China/240.52.19.175.adsl-pool.jlccptt.net.cn): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-09-12 04:31:12 login authenticator failed for ([153.37.177.219]) [175.19.52.240]: 535 Incorrect authentication data (set_id=gerge)
2026-09-12 04:35:04 login authenticator failed for (61-68-149-204.tpgi.com.au) [175.19.52.240]: 535 Incorrect authentication data ([email protected] )
2026-09-12 05:09:48 login authenticator failed for (143.38.109.208.host.secureserver.net) [175.19.52.240]: 535 Incorrect authentication data (set_id=vc_benjamincarter)
2026-09-12 05:12:07 login authenticator failed for ([49.124.153.3]) [175.19.52.240]: 535 Incorrect authentication data (set_id=matt)
2026-09-12 05:25:10 login authenticator failed for ([97.90.138.11]) [175.19.52.240]: 535 Incorrect authentication data ([email protected] )
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Port Scan
🇩🇪
kreativstrecke
2026-09-12 10:21:11
(23 hours ago)
2026-09-12T12:21:11.092304+02:00 srv03 postfix/smtps/smtpd[175089]: warning: unknown[175.19.52.240]: ...
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2026-09-12T12:21:11.092304+02:00 srv03 postfix/smtps/smtpd[175089]: warning: unknown[175.19.52.240]: SASL LOGIN authentication failed: (reason unavailable), [email protected]
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Brute-Force
🇫🇷
tecnicorioja
2026-09-12 10:00:43
(1 day ago)
SASL LOGIN authentication failed Sep 12 08:55:30
Brute-Force
🇺🇸
lintelcorpo
2026-09-12 09:02:23
(1 day ago)
Yesterday, this IP was the source of 9 failed authentications targeting 9 unique usernames on our Ma ...
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Yesterday, this IP was the source of 9 failed authentications targeting 9 unique usernames on our Mail Server at 216.21.193.119.
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Brute-Force
🇬🇧
stom
2026-09-12 08:48:14
(1 day ago)
2026-09-12T08:48:11.883173ls1.tom2.co.uk postfix/smtps/smtpd[31748]: warning: unknown[175.19.52.240] ...
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2026-09-12T08:48:11.883173ls1.tom2.co.uk postfix/smtps/smtpd[31748]: warning: unknown[175.19.52.240]: SASL LOGIN authentication failed: authentication failure
...
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Brute-Force
Email Spam