๐ฉ๐ช
justaw
2026-04-22 17:01:36
(1 month ago)
Fail2Ban: postfix-sasl, 3 failures. SMTP AUTH brute force
Email Spam
Brute-Force
๐ซ๐ท
Lacrimosa99
2026-04-22 16:52:10
(1 month ago)
2026-04-22 18:51:50 login authenticator failed for (User) [178.16.54.237]: 535 Incorrect authenticat ...
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2026-04-22 18:51:50 login authenticator failed for (User) [178.16.54.237]: 535 Incorrect authentication data ([email protected] )
2026-04-22 18:51:58 login authenticator failed for (User) [178.16.54.237]: 535 Incorrect authentication data ([email protected] )
2026-04-22 18:52:09 login authenticator failed for (User) [178.16.54.237]: 535 Incorrect authentication data ([email protected] )
...
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Spoofing
Brute-Force
๐ฉ๐ช
mueller-nils.com
2026-04-22 16:44:09
(1 month ago)
Apr 22 18:44:07 [host] postfix/smtpd[27537]: warning: unknown[178.16.54.237]: SASL LOGIN authenticat ...
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Apr 22 18:44:07 [host] postfix/smtpd[27537]: warning: unknown[178.16.54.237]: SASL LOGIN authenticat
Apr 22 18:44:08 [host] postfix/smtpd[27537]: warning: unknown[178.16.54.237]: SASL LOGIN authenticat
Apr 22 18:44:08 [host] postfix/smtpd[27537]: warning: unknown[178.16.54.237]: SASL LOGIN authenticat
Apr 22 18:44:08 [host] postfix/smtpd[27537]: warning: unknown[178.16.54.237]: SASL LOGIN authenticat
Apr 22 18:44:08 [host] postfix/smtpd[27537]: warning: unknown[178.16.54.237]: SASL LOGIN authenticat
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Hacking
Brute-Force
๐ฉ๐ช
Prepaid-Host.com
2026-04-22 16:34:48
(1 month ago)
Spam detected | Events: 15 | First seen: 2026-04-22 16:34 UTC | Last seen: 2026-04-22 16:34 UTC | Sa ...
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Spam detected | Events: 15 | First seen: 2026-04-22 16:34 UTC | Last seen: 2026-04-22 16:34 UTC | Sample: Apr 22 18:34:27 web-interface postfix/smtpd[733641]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
Apr 22 18:34:27 web-interface postfix/smtpd[733641]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
Apr 22 18:34:27 web-interface postfix/smtpd[733641]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failu
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Email Spam
๐ฉ๐ช
jonathanselea.se
2026-04-22 16:34:44
(1 month ago)
Apr 22 18:34:44 mx1 postfix/postscreen[981355]: PREGREET 11 after 0.03 from [178.16.54.237]:61909: E ...
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Apr 22 18:34:44 mx1 postfix/postscreen[981355]: PREGREET 11 after 0.03 from [178.16.54.237]:61909: EHLO User\r\n
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DDoS Attack
Email Spam
Brute-Force
Exploited Host
๐ฉ๐ช
bastiweb
2026-04-22 16:33:04
(1 month ago)
Apr 22 18:33:03 h2779839 postfix/smtpd[21787]: warning: unknown[178.16.54.237]: SASL LOGIN authentic ...
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Apr 22 18:33:03 h2779839 postfix/smtpd[21787]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
Apr 22 18:33:03 h2779839 postfix/smtpd[21787]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
Apr 22 18:33:04 h2779839 postfix/smtpd[21787]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
Apr 22 18:33:04 h2779839 postfix/smtpd[21787]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
Apr 22 18:33:04 h2779839 postfix/smtpd[21787]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
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Brute-Force
๐ฉ๐ช
Pz
2026-04-22 16:32:05
(1 month ago)
2026-04-22T16:32:01.395050+00:00 htz2.hosts.pzenix.com postfix/smtpd[3436360]: warning: unknown[178. ...
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2026-04-22T16:32:01.395050+00:00 htz2.hosts.pzenix.com postfix/smtpd[3436360]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-04-22T16:32:03.039029+00:00 htz2.hosts.pzenix.com postfix/smtpd[3436360]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-04-22T16:32:04.927880+00:00 htz2.hosts.pzenix.com postfix/smtpd[3436360]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
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Brute-Force
๐ซ๐ท
Richie
2026-04-22 16:16:35
(1 month ago)
Apr 22 18:16:35 host2 postfix/smtpd[1755984]: warning: unknown[178.16.54.237]: SASL LOGIN authentica ...
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Apr 22 18:16:35 host2 postfix/smtpd[1755984]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure
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Brute-Force
Email Spam
๐ฉ๐ช
Prepaid-Host.com
2026-04-22 16:12:07
(1 month ago)
Spam detected | Events: 15 | First seen: 2026-04-22 16:12 UTC | Last seen: 2026-04-22 16:12 UTC | Sa ...
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Spam detected | Events: 15 | First seen: 2026-04-22 16:12 UTC | Last seen: 2026-04-22 16:12 UTC | Sample: Apr 22 18:11:45 web-interface postfix/smtpd[686425]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
Apr 22 18:11:45 web-interface postfix/smtpd[686425]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
Apr 22 18:11:45 web-interface postfix/smtpd[686425]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failu
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Email Spam
๐ณ๐ฑ
Godert Jan van Manen
2026-04-22 16:07:26
(1 month ago)
Apr 22 18:07:09 odin postfix/smtpd[22269]: warning: unknown[178.16.54.237]: SASL LOGIN authenticatio ...
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Apr 22 18:07:09 odin postfix/smtpd[22269]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Apr 22 18:07:15 odin postfix/smtpd[22269]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Apr 22 18:07:25 odin postfix/smtpd[22269]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
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Brute-Force
๐ฉ๐ช
Tha_14
2026-04-22 16:05:34
(1 month ago)
Apr 22 18:05:17 hosting postfix/smtpd[2532065]: warning: unknown[178.16.54.237]: SASL LOGIN authenti ...
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Apr 22 18:05:17 hosting postfix/smtpd[2532065]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=jing@*
Apr 22 18:05:23 hosting postfix/smtpd[2532065]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=jing@*
Apr 22 18:05:33 hosting postfix/smtpd[2532065]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=jing@*
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Brute-Force
๐ฉ๐ช
Scimetrica
2026-04-22 16:00:02
(1 month ago)
Reported automatically by fail2ban on mail.scimetrica.com
Hacking
๐ฉ๐ช
sebi
2026-04-22 15:59:48
(1 month ago)
2026-04-22 15:55:00 SMTP protocol error in "AUTH LOGIN" H=(User) [178.16.54.237] AUTH command used w ...
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2026-04-22 15:55:00 SMTP protocol error in "AUTH LOGIN" H=(User) [178.16.54.237] AUTH command used when not advertised
2026-04-22 17:03:20 SMTP protocol error in "AUTH LOGIN" H=(User) [178.16.54.237] AUTH command used when not advertised
2026-04-22 17:59:47 SMTP protocol error in "AUTH LOGIN" H=(User) [178.16.54.237] AUTH command used when not advertised
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Brute-Force
๐ฉ๐ช
mueller-nils.com
2026-04-22 15:46:14
(1 month ago)
Apr 22 17:46:13 [host] postfix/smtpd[23121]: warning: unknown[178.16.54.237]: SASL LOGIN authenticat ...
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Apr 22 17:46:13 [host] postfix/smtpd[23121]: warning: unknown[178.16.54.237]: SASL LOGIN authenticat
Apr 22 17:46:13 [host] postfix/smtpd[23121]: warning: unknown[178.16.54.237]: SASL LOGIN authenticat
Apr 22 17:46:13 [host] postfix/smtpd[23121]: warning: unknown[178.16.54.237]: SASL LOGIN authenticat
Apr 22 17:46:13 [host] postfix/smtpd[23121]: warning: unknown[178.16.54.237]: SASL LOGIN authenticat
Apr 22 17:46:14 [host] postfix/smtpd[23121]: warning: unknown[178.16.54.237]: SASL LOGIN authenticat
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Hacking
Brute-Force
๐ฉ๐ช
bastiweb
2026-04-22 15:35:46
(1 month ago)
Apr 22 17:35:45 h2779839 postfix/smtpd[17385]: warning: unknown[178.16.54.237]: SASL LOGIN authentic ...
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Apr 22 17:35:45 h2779839 postfix/smtpd[17385]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
Apr 22 17:35:45 h2779839 postfix/smtpd[17385]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
Apr 22 17:35:46 h2779839 postfix/smtpd[17385]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
Apr 22 17:35:46 h2779839 postfix/smtpd[17385]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
Apr 22 17:35:46 h2779839 postfix/smtpd[17385]: warning: unknown[178.16.54.237]: SASL LOGIN authentication failed: authentication failure, [email protected]
...
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Brute-Force