May 7 22:39:44 mail postfix/smtps/smtpd[2476831]: warning: unknown[52.149.64.246]: SASL LOGIN authe ...
show moreMay 7 22:39:44 mail postfix/smtps/smtpd[2476831]: warning: unknown[52.149.64.246]: SASL LOGIN authentication failed: (reason unavailable), [email protected]
May 8 00:26:35 mail postfix/smtps/smtpd[2503304]: warning: unknown[52.149.64.246]: SASL LOGIN authentication failed: (reason unavailable), [email protected]
May 8 00:46:48 mail postfix/smtps/smtpd[2508706]: warning: unknown[52.149.64.246]: SASL LOGIN authentication failed: (reason unavailable), [email protected]
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Brute-Force
Anonymous
(smtpauth) Failed SMTP AUTH login from 52.149.64.246 (NL/Netherlands/North Holland/Amsterdam/-/[reda ...
show more(smtpauth) Failed SMTP AUTH login from 52.149.64.246 (NL/Netherlands/North Holland/Amsterdam/-/[redacted])
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Detected multiple authentication failures and invalid user attempts in LF_SMTPAUTH from IP address 5 ...
show moreDetected multiple authentication failures and invalid user attempts in LF_SMTPAUTH from IP address 52.149.64.246 on [PT] Tucano Node.
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Brute-Force
SSH
Anonymous
(smtpauth) Failed SMTP AUTH login from 52.149.64.246 (NL/Netherlands/-)
2026-05-07 19:13:28 dovecot_login authenticator failed for H=(ADMIN) [52.149.64.246]:45852: 535 Inco ...
show more2026-05-07 19:13:28 dovecot_login authenticator failed for H=(ADMIN) [52.149.64.246]:45852: 535 Incorrect authentication data (set_id=hugo.olivo@[redacted]company.com.br)
2026-05-07 19:02:18 dovecot_login authenticator failed for H=(ADMIN) [52.149.64.246]:43024: 535 Incorrect authentication data (set_id=hugo.olivo@[redacted]company.com.br)
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