This IP address has been reported a total of
56
times from
55 distinct
sources.
3.21.204.58 was first reported on
, and the most recent report was
.
Recent Reports:
We have received reports of abusive activity from this IP address within the last week. It is
potentially still actively engaged in abusive activities.
2026-06-09T11:41:58.185968hermes2 postfix/submission/smtpd[2538554]: improper command pipelining aft ...
show more2026-06-09T11:41:58.185968hermes2 postfix/submission/smtpd[2538554]: improper command pipelining after CONNECT from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]: \n
2026-06-09T11:42:10.196943hermes2 postfix/submission/smtpd[2538554]: improper command pipelining after CONNECT from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]: GET / HTTP/1.1\r\nHost: 94.130.37.231:587\r\nUser-Agent: visionheight.com/scan Mozilla/5.0 (Macintosh; I
2026-06-09T11:44:44.045070hermes2 postfix/submission/smtpd[2538304]: improper command pipelining after CONNECT from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]: \026\003\001\000\356\001\000\000\352\003\003\363\326\217\217\257\232\367\310\330T\2570A\336\367q\023~4\241\212\241f&\371Cu\030.\022 ) Hx\343S\304?\213M\347"\0350\274\367q7\a}l\3237\344\016\244\232ZJ6\224\a\2321\000&\314\250\314\251\300/\3000\300+\300,\300\023\300\t\300\024\300\n\000\234
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2026-06-09 11:42:39 SMTP call from ec2-3-21-204-58.us-east-2.compute.amazonaws.com [3.21.204.58] dro ...
show more2026-06-09 11:42:39 SMTP call from ec2-3-21-204-58.us-east-2.compute.amazonaws.com [3.21.204.58] dropped: too many unrecognized commands (last was "Accept: */*")
2026-06-09 11:43:36 SMTP call from ec2-3-21-204-58.us-east-2.compute.amazonaws.com [3.21.204.58] dropped: too many syntax or protocol errors (last command was "?", NULL)
2026-06-09 11:44:30 SMTP call from ec2-3-21-204-58.us-east-2.compute.amazonaws.com [3.21.204.58] dropped: too many syntax or protocol errors (last command was "?", NULL)
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2026-06-09 03:41:30 SMTP protocol synchronization error (input sent without waiting for greeting): r ...
show more2026-06-09 03:41:30 SMTP protocol synchronization error (input sent without waiting for greeting): rejected connection from H=ec2-3-21-204-58.us-east-2.compute.amazonaws.com [3.21.204.58] input="\n"
2026-06-09 03:41:45 SMTP protocol synchronization error (input sent without waiting for greeting): rejected connection from H=ec2-3-21-204-58.us-east-2.compute.amazonaws.com [3.21.204.58] input="GET / HTTP/1.1\r\nHost: 78.128.127"
2026-06-09 03:42:25 SMTP protocol synchronization error (input sent without waiting for greeting): rejected connection from H=ec2-3-21-204-58.us-east-2.compute.amazonaws.com [3.21.204.58] input="GET / HTTP/1.1\r\nHost: 78.128.127"
2026-06-09 03:43:17 SMTP protocol synchronization error (input sent without waiting for greeting): rejected connection from H=ec2-3-21-204-58.us-east-2.compute.amazonaws.com [3.21.204.58] input="\026\003\001\001"
2026-06-09 03:44:13 SMTP protocol synchronization error (input sent without waiting for greeting): rejected connection from H=
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Jun 9 09:41:58 ice2 postfix/submission/smtpd[2126068]: lost connection after CONNECT from ec2-3-21- ...
show moreJun 9 09:41:58 ice2 postfix/submission/smtpd[2126068]: lost connection after CONNECT from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]
Jun 9 09:43:55 ice2 postfix/submission/smtpd[2126068]: lost connection after UNKNOWN from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]
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Brute-Force
Email Spam
Anonymous
2026-06-09T10:41:09.909992+01:00 parsel.zopatista.com postfix/submission/smtpd[2645449]: improper co ...
show more2026-06-09T10:41:09.909992+01:00 parsel.zopatista.com postfix/submission/smtpd[2645449]: improper command pipelining after CONNECT from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]: \n
2026-06-09T10:43:49.417131+01:00 parsel.zopatista.com postfix/submission/smtpd[2645449]: improper command pipelining after CONNECT from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]: \026\003\001\000\356\001\000\000\352\003\003z\242\372Hi\252\000\a\255ZV/t\320\271\215\374\355\003\315\305\277`{\210\253\366\224=^\310\217 \242\035\335\351NFk\362\004\317\376Q\v\336(T1\360\346\343\233\234\356\361\220l\325\331\234m\334,\000&\314\250\314\251\300/\3000\300+\300,\300\023\300\t\300\024\300\n\000\234
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Jun 9 10:41:52 - postfix/smtpd[189881]: improper command pipelining after CONNECT from ec2-3-21-204 ...
show moreJun 9 10:41:52 - postfix/smtpd[189881]: improper command pipelining after CONNECT from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]: \n
Jun 9 10:41:52 - postfix/smtpd[189881]: lost connection after CONNECT from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]
Jun 9 10:43:48 - postfix/smtpd[189881]: lost connection after CONNECT from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]
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2026-06-0911:42:40SMTPcallfromec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]:25624drop ...
show more2026-06-0911:42:40SMTPcallfromec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]:25624dropped:toomanysyntaxorprotocolerrors\(lastcommandwas\"\?\"\,NULL\)2026-06-0911:42:40SMTPcallfromec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]:48092dropped:toomanysyntaxorprotocolerrors\(lastcommandwas\"\?\"\,NULL\)2026-06-0911:42:46SMTPcallfromec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]:53768dropped:toomanysyntaxorprotocolerrors\(lastcommandwas\"\?\"\,NULL\)2026-06-0911:43:37SMTPcallfromec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]:22778dropped:toomanysyntaxorprotocolerrors\(lastcommandwas\"\?\"\,NULL\)2026-06-0911:43:38SMTPcallfromec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]:10264dropped:toomanysyntaxorprotocolerrors\(lastcommandwas\"\?\"\,NULL\)
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Hacking
Web App Attack
Anonymous
2026-06-09T11:41:44.632251+02:00 mail postfix/submission/smtpd[575122]: improper command pipelining ...
show more2026-06-09T11:41:44.632251+02:00 mail postfix/submission/smtpd[575122]: improper command pipelining after CONNECT from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]: \n
2026-06-09T11:41:58.997059+02:00 mail postfix/submission/smtpd[575122]: warning: non-SMTP command from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]: GET / HTTP/1.1
2026-06-09T11:42:39.194564+02:00 mail postfix/submission/smtpd[575087]: improper command pipelining after CONNECT from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]: GET / HTTP/1.1\r\nHost: myip:587\r\nUser-Agent: visionheight.com/scan Mozilla/5.0 (Macintosh; I
2026-06-09T11:42:39.195434+02:00 mail postfix/submission/smtpd[575087]: warning: non-SMTP command from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]: GET / HTTP/1.1
2026-06-09T11:43:35.785120+02:00 mail postfix/submission/smtpd[575122]: warning: non-SMTP command from ec2-3-21-204-58.us-east-2.compute.amazonaws.com[3.21.204.58]: \026\
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