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🇫🇷
[email protected]
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Oct 31 17:21:41 corp postfix/submission/smtpd[2547532]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: authentication failure, sasl_username=oscar.torres
Oct 31 17:21:42 corp postfix/submission/smtpd[2547532]: warning: unknown[15 ...
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Oct 31 17:21:41 corp postfix/submission/smtpd[2547532]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: authentication failure, sasl_username=oscar.torres
Oct 31 17:21:42 corp postfix/submission/smtpd[2547532]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: authentication failure, [email protected]
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Brute-Force
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🇫🇷
kisiek
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(smtpauth) Failed SMTP AUTH login from 151.242.63.238 (US/United States/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-10-31 11:09:15 login authenticator failed for H=(Mu17jM8e5) [151.242.63.238]: 535 Incorr ...
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(smtpauth) Failed SMTP AUTH login from 151.242.63.238 (US/United States/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-10-31 11:09:15 login authenticator failed for H=(Mu17jM8e5) [151.242.63.238]: 535 Incorrect authentication data (set_id=info)
2026-10-31 11:09:17 login authenticator failed for H=(RdXFKN9aY7) [151.242.63.238]: 535 Incorrect authentication data ([email protected])
2026-10-31 11:09:41 login authenticator failed for H=(RQxcB2) [151.242.63.238]: 535 Incorrect authentication data (set_id=info)
2026-10-31 11:09:43 login authenticator failed for H=(tqjBiQsxfA) [151.242.63.238]: 535 Incorrect authentication data ([email protected])
2026-10-31 11:10:08 login authenticator failed for H=(GpoUx2cGs) [151.242.63.238]: 535 Incorrect authentication data (set_id=info)
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Port Scan
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🇦🇹
joe-abuse
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2026-10-31T07:39:17.722410+01:00 ucs1 dovecot: auth-worker(128849): conn unix:auth-worker (pid=1061,uid=121): auth-worker<1>: pam(sam22,151.242.63.238): unknown user (given password: Swami@2006)
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Brute-Force
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🇫🇷
[email protected]
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Oct 30 21:06:38 mail6 postfix/submission/smtpd[2741071]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=administracion
Oct 30 21:06:45 mail6 postfix/submission/smtpd[2741071]: warning: unknown[ ...
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Oct 30 21:06:38 mail6 postfix/submission/smtpd[2741071]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=administracion
Oct 30 21:06:45 mail6 postfix/submission/smtpd[2741071]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: (reason unavailable), [email protected]
Oct 30 21:06:45 mail6 postfix/submission/smtpd[2741071]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: (reason unavailable), [email protected]
Oct 30 21:07:09 mail6 postfix/submission/smtpd[2741290]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=administracion
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Brute-Force
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🇫🇷
Dampen59
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(smtpauth) Failed SMTP AUTH login from 151.242.63.238 (US/United States/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-10-30 17:31:06 dovecot_login authenticator failed for H=(gdFdPjj) [151.242.63.238]:65335 ...
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(smtpauth) Failed SMTP AUTH login from 151.242.63.238 (US/United States/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-10-30 17:31:06 dovecot_login authenticator failed for H=(gdFdPjj) [151.242.63.238]:65335: 535 Incorrect authentication data (set_id=contact)
2026-10-30 17:31:13 dovecot_login authenticator failed for H=(IfeSULBITm) [151.242.63.238]:65446: 535 Incorrect authentication data ([email protected])
2026-10-30 17:31:37 dovecot_login authenticator failed for H=(mRqPMkhl) [151.242.63.238]:50031: 535 Incorrect authentication data (set_id=contact)
2026-10-30 17:31:40 dovecot_login authenticator failed for H=(cbHBz1) [151.242.63.238]:50131: 535 Incorrect authentication data ([email protected])
2026-10-30 17:32:04 dovecot_login authenticator failed for H=(Dd6ZS3) [151.242.63.238]:50914: 535 Incorrect authentication data (set_id=contact)
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Port Scan
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🇹🇷
Jova
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Repeated failed SMTP logins to a mail account (credential guessing).
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Brute-Force
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🇫🇷
[email protected]
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Oct 30 15:02:10 mail6 postfix/submission/smtpd[2579683]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=sat
Oct 30 15:02:17 mail6 postfix/submission/smtpd[2579097]: warning: unknown[151.242.63. ...
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Oct 30 15:02:10 mail6 postfix/submission/smtpd[2579683]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=sat
Oct 30 15:02:17 mail6 postfix/submission/smtpd[2579097]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: (reason unavailable), [email protected]
Oct 30 15:02:41 mail6 postfix/submission/smtpd[2579683]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=sat
Oct 30 15:02:44 mail6 postfix/submission/smtpd[2579683]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: (reason unavailable), [email protected]
Oct 30 15:03:08 mail6 postfix/submission/smtpd[2579683]: warning: unknown[151.242.63.238]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=sat
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Brute-Force
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🇨🇦
Mediashaker
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(smtpauth) Failed SMTP AUTH login from 151.242.63.238 (US/United States/-)
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Brute-Force
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🇳🇱
rroethof
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(smtpauth) Failed SMTP AUTH login from 151.242.63.238 (US/United States/-): 5 in the last 3600 secs; Ports: *; Direction: 1; Trigger: LF_SMTPAUTH; Logs: 2026-10-30 04:35:53 login authenticator failed for H=(Cm4RDKZIZY) [151.242.63.238]: 535 Incorrect ...
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(smtpauth) Failed SMTP AUTH login from 151.242.63.238 (US/United States/-): 5 in the last 3600 secs; Ports: *; Direction: 1; Trigger: LF_SMTPAUTH; Logs: 2026-10-30 04:35:53 login authenticator failed for H=(Cm4RDKZIZY) [151.242.63.238]: 535 Incorrect authentication data (set_id=info)
2026-10-30 04:35:54 login authenticator failed for H=(f7Pidg) [151.242.63.238]: 535 Incorrect authentication data ([email protected])
2026-10-30 04:36:16 login authenticator failed for H=(AyzbZcze) [151.242.63.238]: 535 Incorrect authentication data (set_id=info)
2026-10-30 04:36:17 login authenticator failed for H=(MVIdhywvY) [151.242.63.238]: 535 Incorrect authentication data ([email protected])
2026-10-30 04:36:39 login authenticator failed for H=(57dU4rz) [151.242.63.238]: 535 Incorrect authentication data (set_id=info)
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Spoofing
Brute-Force
Bad Web Bot
Web App Attack
SSH
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🇩🇪
konseptit
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(smtpauth) Failed SMTP AUTH login from 151.242.63.238 (US/United States/-)
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Brute-Force
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🇩🇪
LRob
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SMTP AUTH probe
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Port Scan
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🇺🇸
masterguru
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(smtpauth) Failed SMTP AUTH login from 151.242.63.238 (US/United States/-): 5 in the last 3600 secs (0-169)
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Brute-Force
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🇳🇱
exxos
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web exploit attacks
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Web App Attack
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🇳🇱
exxos
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web exploit attacks
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Web App Attack
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🇳🇱
exxos
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web exploit attacks
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Web App Attack
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