๐ญ๐บ
DumaNet
2026-04-11 02:45:00
(2 months ago)
Multiple SASL authentication failures.
Date: 2026 Apr 11. 01:04:12 -- Source IP: 181.214.166.209
...
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Multiple SASL authentication failures.
Date: 2026 Apr 11. 01:04:12 -- Source IP: 181.214.166.209
Portion of the log(s):
Apr 11 01:04:09 michael postfix/smtpd[3105805]: warning: unknown[181.214.166.209]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=[removed]
Apr 11 01:04:09 michael postfix/smtpd[3105805]: warning: unknown[181.214.166.209]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=[removed]
Apr 11 01:03:45 michael postfix/smtpd[3105805]: warning: unknown[181.214.166.209]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=[removed]@dumanet.hu
Apr 11 01:03:41 michael postfix/smtpd[3105805]: warning: unknown[181.214.166.209]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=[removed]
Apr 11 01:03:41 michael postfix/smtpd[3105805]: warning: unknown[181.214.166.209]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=[removed]
Apr 11 01:03:17 michael postfix/smtpd[3105805]: warning: unknown
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Brute-Force
๐ท๐ด
gtheo99
2026-04-10 23:20:05
(2 months ago)
(smtpauth) Failed SMTP AUTH login from 181.214.166.209 (US/United States/-): 2 in the last 900 secs
Brute-Force
Email Spam
๐ฟ๐ฆ
maximonline.co.za
2026-04-10 01:10:05
(2 months ago)
Brute Force SMTP AUTH Attack
Brute-Force
๐ฎ๐น
Progetto1
2026-04-09 00:15:04
(2 months ago)
Mail - Multiple failed login attempts
Brute-Force
Exploited Host
๐บ๐ธ
bigscoots.com
2026-04-08 09:41:52
(2 months ago)
(smtpauth) Failed SMTP AUTH login from 181.214.166.209 (US/United States/-): 5 in the last 3600 secs ...
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(smtpauth) Failed SMTP AUTH login from 181.214.166.209 (US/United States/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-04-08 05:40:53 dovecot_login authenticator failed for H=(WhHjv0FkB) [181.214.166.209]:7746: 535 Incorrect authentication data (set_id=kelly)
2026-04-08 05:40:59 dovecot_login authenticator failed for H=(IzpNA5) [181.214.166.209]:24660: 535 Incorrect authentication data ([email protected] )
2026-04-08 05:41:22 dovecot_login authenticator failed for H=(sLwP1iCXR) [181.214.166.209]:51624: 535 Incorrect authentication data (set_id=kelly)
2026-04-08 05:41:24 dovecot_login authenticator failed for H=(G9FdaA) [181.214.166.209]:8518: 535 Incorrect authentication data ([email protected] )
2026-04-08 05:41:47 dovecot_login authenticator failed for H=(GbMdFeSX) [181.214.166.209]:8808: 535 Incorrect authentication data (set_id=kelly)
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Brute-Force
SSH
๐น๐ญ
thaizone.com
2026-04-08 09:35:23
(2 months ago)
Mail credential brute-force attack (SM5) #1
Email Spam
Brute-Force
๐ฎ๐ฑ
Dolphi
2026-04-08 08:31:43
(2 months ago)
Mail server brute force
Email Spam
Brute-Force
๐บ๐ธ
bigscoots.com
2026-04-08 00:31:15
(2 months ago)
(smtpauth) Failed SMTP AUTH login from 181.214.166.209 (US/United States/-): 5 in the last 3600 secs ...
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(smtpauth) Failed SMTP AUTH login from 181.214.166.209 (US/United States/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-04-07 20:30:18 dovecot_login authenticator failed for H=(NNVLWL) [181.214.166.209]:13192: 535 Incorrect authentication data (set_id=mikestephens)
2026-04-07 20:30:24 dovecot_login authenticator failed for H=(NMP0QpR) [181.214.166.209]:24143: 535 Incorrect authentication data ([email protected] )
2026-04-07 20:30:47 dovecot_login authenticator failed for H=(QhmTBDyMR) [181.214.166.209]:7601: 535 Incorrect authentication data (set_id=mikestephens)
2026-04-07 20:30:49 dovecot_login authenticator failed for H=(eM5ggkH1) [181.214.166.209]:41043: 535 Incorrect authentication data ([email protected] )
2026-04-07 20:31:12 dovecot_login authenticator failed for H=(rj4wSP) [181.214.166.209]:35745: 535 Incorrect authentication data (set_id=mikestephens)
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Brute-Force
SSH
๐ซ๐ท
โจ
2026-04-07 23:30:09
(2 months ago)
Rule : SMTP
04/08/26 01:28:43 1532 181.214.166.209 ***hidden-privacy*** ESMTP MailEnable Service, ...
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Rule : SMTP
04/08/26 01:28:43 1532 181.214.166.209 ***hidden-privacy*** ESMTP MailEnable Service, Version: 10.51-- ready at 04/08/26 01:28:43 91 0
04/08/26 01:28:43 1532 181.214.166.209 EHLO EHLO 5Y9io10x ***hidden-privacy*** [181.214.166.209], this server offers 5 extensions 238 15
04/08/26 01:28:43 1532 181.214.166.209 AUTH AUTH LOGIN 334 VXNlcm5hbWU6 18 12
04/08/26 01:28:43 1532 181.214.166.209 AUTH {blank} 334 UGFzc3dvcmQ6 18 34 [email protected]
04/08/26 01:28:43 1532 181.214.166.209 AUTH {blank} 535 Invalid Username or Password 34 10 [email protected]
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Email Spam
Port Scan
Spoofing
๐ฌ๐ง
noise.agency
2026-04-07 20:46:45
(2 months ago)
(smtpauth) Failed SMTP AUTH login from 181.214.166.209 (US/United States/-)
Brute-Force
๐จ๐ฟ
unhfree.net
2026-04-06 16:37:19
(2 months ago)
Apr 6 18:36:28 canopus postfix/smtpd[2196016]: NOQUEUE: reject: RCPT from unknown[181.214.166.209]: ...
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Apr 6 18:36:28 canopus postfix/smtpd[2196016]: NOQUEUE: reject: RCPT from unknown[181.214.166.209]: 554 5.7.1 <[email protected] >: Sender address rejected: Access denied; from=<[email protected] > to=<[email protected] > proto=ESMTP helo=<xfiwiAaGe>
Apr 6 18:36:30 canopus postfix/smtpd[2196021]: NOQUEUE: reject: RCPT from unknown[181.214.166.209]: 554 5.7.1 <[email protected] >: Sender address rejected: Access denied; from=<[email protected] > to=<[email protected] > proto=ESMTP helo=<vOn6BLtUMH>
Apr 6 18:36:53 canopus postfix/smtpd[2196016]: NOQUEUE: reject: RCPT from unknown[181.214.166.209]: 554 5.7.1 <[email protected] >: Sender address rejected: Access denied; from=<[email protected] > to=<[email protected] > proto=ESMTP helo=<bJguBfrwfY>
Apr 6 18:36:55 canopus postfix/smtpd[2196021]: NOQUEUE: reject: RCPT from unknown[181.214.166.209]: 554 5.7.1 <[email protected] >: Sender address rejected: Access denied; from=<[email protected] > to=
...
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Brute-Force
Exploited Host
Anonymous
2026-04-06 15:26:47
(2 months ago)
Apr 5 21:07:11 mx1 postfix/submission/smtpd[18850]: warning: unknown[181.214.166.209]: SASL LOGIN a ...
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Apr 5 21:07:11 mx1 postfix/submission/smtpd[18850]: warning: unknown[181.214.166.209]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Apr 5 21:07:18 mx1 postfix/submission/smtpd[18850]: warning: unknown[181.214.166.209]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Apr 6 17:26:47 mx1 postfix/submission/smtpd[25881]: warning: unknown[181.214.166.209]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
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Brute-Force
๐ณ๐ฑ
Sonar
2026-03-09 21:39:17
(3 months ago)
Bad_host
Brute-Force
๐ณ๐ฑ
Sonar
2026-03-07 20:48:00
(3 months ago)
Bad_host
Brute-Force
Anonymous
2026-03-03 18:43:02
(3 months ago)
...
Brute-Force