This IP address has been reported a total of
138
times from
123 distinct
sources.
52.15.212.212 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.
Jun 2 13:20:49 <mail.info> [redacted] sm-mta[24469]: 652HKnst024469: rejecting commands from ec2-52 ...
show moreJun 2 13:20:49 <mail.info> [redacted] sm-mta[24469]: 652HKnst024469: rejecting commands from ec2-52-15-212-212.us-east-2.compute.amazonaws.com [52.15.212.212] due to pre-greeting traffic after 0 seconds
Jun 2 13:21:20 <mail.info> [redacted] sm-mta[24474]: 652HLKHD024474: rejecting commands from ec2-52-15-212-212.us-east-2.compute.amazonaws.com [52.15.212.212] due to pre-greeting traffic after 0 seconds
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2026-06-03T01:20:53.240636+08:00 Galaxy postfix/smtpd[586708]: improper command pipelining after CON ...
show more2026-06-03T01:20:53.240636+08:00 Galaxy postfix/smtpd[586708]: improper command pipelining after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]: \n
2026-06-03T01:20:53.404826+08:00 Galaxy postfix/smtpd[586708]: lost connection after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]
2026-06-03T01:21:23.408455+08:00 Galaxy postfix/smtpd[586708]: improper command pipelining after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]: GET / HTTP/1.1\r\nHost: 172.233.80.63:25\r\nUser-Agent: visionheight.com/scan Mozilla/5.0 (Macintosh; In
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Email Spam
Anonymous
2026-06-02T17:20:45.224005+00:00 mail postfix/smtpd[1923219]: improper command pipelining after CONN ...
show more2026-06-02T17:20:45.224005+00:00 mail postfix/smtpd[1923219]: improper command pipelining after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]: \n
2026-06-02T17:20:45.338637+00:00 mail postfix/smtpd[1923219]: lost connection after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]
2026-06-02T17:21:16.084005+00:00 mail postfix/smtpd[1923219]: improper command pipelining after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]: GET / HTTP/1.1\r\nHost: 167.71.51.229:25\r\nUser-Agent: visionheight.com/scan Mozilla/5.0 (Macintosh; In
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Email Spam
Brute-Force
Anonymous
2026-06-02 13:18:57 SMTP protocol synchronization error \(input sent without waiting for greeting\): ...
show more2026-06-02 13:18:57 SMTP protocol synchronization error \(input sent without waiting for greeting\): rejected connection from H=ec2-52-15-212-212.us-east-2.compute.amazonaws.com \[52.15.212.212\] input="\n"
2026-06-02 13:19:28 SMTP protocol synchronization error \(input sent without waiting for greeting\): rejected connection from H=ec2-52-15-212-212.us-east-2.compute.amazonaws.com \[52.15.212.212\] input="GET / HTTP/1.1\r\nHost: 162.212.158.192:25\r\nUser-Agent: visionheight.com/scan Mozilla/5.0 \(Macintosh\; Intel Mac OS X 10_15_7\) Chrome/126.0.0.0 Safari/53"
2026-06-02 13:21:11 SMTP protocol synchronization error \(input sent without waiting for greeting\): rejected connection from H=ec2-52-15-212-212.us-east-2.compute.amazonaws.com \[52.15.212.212\] input="GET / HTTP/1.1\r\nHost: 162.212.158.192:25\r\nUser-Agent: visionheight.com/scan Mozilla/5.0 \(Macintosh\; Intel Mac OS X 10_15_7\) Chrome/126.0.0.0 Safari/53"
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2026-06-02T19:17:24.325120+02:00 websrv1.aknwsrv.net postfix/smtpd[1961686]: improper command pipeli ...
show more2026-06-02T19:17:24.325120+02:00 websrv1.aknwsrv.net postfix/smtpd[1961686]: improper command pipelining after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]: n
2026-06-02T19:17:24.440561+02:00 websrv1.aknwsrv.net postfix/smtpd[1961686]: lost connection after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]
2026-06-02T19:17:55.864272+02:00 websrv1.aknwsrv.net postfix/smtpd[1914511]: improper command pipelining after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]: GET / HTTP/1.1rnHost: 185.118.196.24:25rnUser-Agent: visionheight.com/scan Mozilla/5.0 (Macintosh; I
2026-06-02T19:19:37.142164+02:00 websrv1.aknwsrv.net postfix/smtpd[1961686]: improper command pipelining after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]: GET / HTTP/1.1rnHost: 185.118.196.24:25rnUser-Agent: visionheight.com/scan Mozilla/5.0 (Macintosh; I
2026-06-02T19:21:02.927804+02:00 websrv1.aknwsrv.net postfix/sm
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postfix Server DDoS - AUTH drops, early HANGUPs, other DDoS attacks, etc. Might contain brute-force ...
show morepostfix Server DDoS - AUTH drops, early HANGUPs, other DDoS attacks, etc. Might contain brute-force dictionary attack sightings on IMAP and SMTP.
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Jun 02 19:20:20 mail postfix/smtpd[1676852]: improper command pipelining after CONNECT from unknown[ ...
show moreJun 02 19:20:20 mail postfix/smtpd[1676852]: improper command pipelining after CONNECT from unknown[52.15.212.212]: \n
Jun 02 19:20:41 mail postfix/smtpd[1676852]: improper command pipelining after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]: GET / HTTP/1.1\r\nHost: 164.40.242.202:25\r\nUser-Agent: visionheight.com/scan Mozilla/5.0 (Macintosh; I
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2026-06-02T19:19:56.095949+02:00 ieyasu.moretrix.com postfix/postscreen[1709326]: PREGREET 1 after 0 ...
show more2026-06-02T19:19:56.095949+02:00 ieyasu.moretrix.com postfix/postscreen[1709326]: PREGREET 1 after 0 from [52.15.212.212]:48322: \n
2026-06-02T19:19:56.265734+02:00 ieyasu.moretrix.com postfix/postscreen[1709326]: HANGUP after 0 from [52.15.212.212]:48322 in tests after SMTP handshake
2026-06-02T19:20:27.224086+02:00 ieyasu.moretrix.com postfix/postscreen[1709326]: PREGREET 190 after 0 from [52.15.212.212]:41156: GET / HTTP/1.1\r\nHost: 176.9.64.17:25\r\nUser-Agent: visionheight.com/scan Mozilla/5.0 (Macintosh;
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Brute-Force
Anonymous
2026-06-02T19:19:35.077132+02:00 host postfix/smtpd[502236]: improper command pipelining after CONNE ...
show more2026-06-02T19:19:35.077132+02:00 host postfix/smtpd[502236]: improper command pipelining after CONNECT from unknown[52.15.212.212]: \n
2026-06-02T19:19:35.197435+02:00 host postfix/smtpd[502236]: lost connection after CONNECT from unknown[52.15.212.212]
2026-06-02T19:20:06.196915+02:00 host postfix/smtpd[502236]: improper command pipelining after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]: GET / HTTP/1.1\r\nHost: 172.104.246.203:25\r\nUser-Agent: visionheight.com/scan Mozilla/5.0 (Macintosh;
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Brute-Force
Anonymous
Kept connecting and disconnecting without issuing any commands
Unsolicited TCP connection from 52.15.212.212 to port 0 at 2026-06-02T17:18:50Z. Source IP completed ...
show moreUnsolicited TCP connection from 52.15.212.212 to port 0 at 2026-06-02T17:18:50Z. Source IP completed three-way handshake to non-public service on this host. Detected by automated intrusion monitoring.
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2026-06-02T19:18:14.193641+02:00 srv postfix/smtpd[392000]: improper command pipelining after CONNEC ...
show more2026-06-02T19:18:14.193641+02:00 srv postfix/smtpd[392000]: improper command pipelining after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]: \n
2026-06-02T19:18:14.322724+02:00 srv postfix/smtpd[392000]: lost connection after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]
2026-06-02T19:18:45.849948+02:00 srv postfix/smtpd[392000]: improper command pipelining after CONNECT from ec2-52-15-212-212.us-east-2.compute.amazonaws.com[52.15.212.212]: GET / HTTP/1.1\r\nHost: 188.68.40.140:25\r\nUser-Agent: visionheight.com/scan Mozilla/5.0 (Macintosh; In
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Brute-Force
Showing 106 to
120
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