Suspicious activity detected from IP 212.56.54.129 based on mailserver logs.
Sample logs:
2026-03-12 ...
show moreSuspicious activity detected from IP 212.56.54.129 based on mailserver logs.
Sample logs:
2026-03-12 10:26:49,668 INFO [qtp2102534528-127673] [name=**@*.id;ip=172.16.0.182;oip=212.56.54.129;oport=10061;oproto=smtp;port=51226;soapId=2e79618f;] soap - AuthRequest elapsed=76
2026-03-12 11:16:46,485 INFO [qtp2102534528-127998] [name=**@*.id;ip=172.16.0.182;oip=212.56.54.129;oport=4322;oproto=smtp;port=36652;soapId=2e7961ae;] SoapEngine - handler exception: authentication failed for [**], LDAP error: - unable to ldap authenticate: invalid credentials
2026-03-12 11:16:46,485 INFO [qtp2102534528-127998] [name=**@*.id;ip=172.16.0.182;oip=212.56.54.129;oport=4322;oproto=smtp;port=36652;soapId=2e7961ae;] soap - AuthRequest elapsed=2
2026-03-12 11:16:47,001 INFO [qtp2102534528-127894] [name=**@*.id;ip=172.16.0.182;oip=212.56.54.129;oport=4322;oproto=smtp;port=36660;soapId=2e7961af;] SoapEngine - handler exception: authentication failed for [**], LDAP error: - unable to ldap authenticate: in
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Email account brute force: 10 attempts were recorded from 212.56.54.129
2026-03-12T02:28:24+01:00 wa ...
show moreEmail account brute force: 10 attempts were recorded from 212.56.54.129
2026-03-12T02:28:24+01:00 warning: unknown[212.56.54.129]: SASL PLAIN authentication failed: authentication failure, [email protected]
2026-03-12T02:28:24+01:00 warning: unknown[212.56.54.129]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-03-12T02:28:25+01:00 warning: unknown[212.56.54.129]: SASL PLAIN authentication failed: authentication failure, [email protected]
2026-03-12T02:28:25+01:00 warning: unknown[212.56.54.129]: SASL LOGIN authentication failed: authentication failure, [email protected]
2026-03-12T02:29:56+01:00 warning: unknown[212.56.54.129]: SASL PLAIN authentication failed: authentication failure, [email protected]
2026-03-12T02:29:56+01:00 warning: unknown[212.56.54.129]: SASL LOGIN authentication failed: authentica
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Brute-Force
Anonymous
Authentication failure
Brute-Force
Anonymous
(smtpauth) Failed SMTP AUTH login from 212.56.54.129 (US/United States/New Jersey/Trenton/-/[redacte ...
show more(smtpauth) Failed SMTP AUTH login from 212.56.54.129 (US/United States/New Jersey/Trenton/-/[redacted])
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Mar 12 00:46:23 mail postfix/submission/smtpd[2179621]: lost connection after CONNECT from unknown[2 ...
show moreMar 12 00:46:23 mail postfix/submission/smtpd[2179621]: lost connection after CONNECT from unknown[212.56.54.129]
Mar 12 00:46:25 mail postfix/submission/smtpd[2179621]: warning: unknown[212.56.54.129]: SASL PLAIN authentication failed:
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