Jan  9 15:07:43 grey postfix/smtpd\[5537\]: NOQUEUE: reject: RCPT from talented.vidyad.com\[63.81.87.71\]: 554 5.7.1 Service unavailable\; Client host \[63.81.87.71\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[63.81.87.71\]\; from=\ to=\ proto=ESMTP helo=\Jan  9 15:07:43 grey postfix/smtpd\[31906\]: NOQUEUE: reject: RCPT from talented.vidyad.com\[63.81.87.71\]: 554 5.7.1 Service unavailable\; Client host \[63.81.87.71\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[63.81.87.71\]\; from=\ to=\ proto=ESMTP helo=\
...

Autoban   63.81.87.71 AUTH/CONNECT

Apr  4 15:20:30 mail.srvfarm.net postfix/smtpd[3301977]: NOQUEUE: reject: RCPT from unknown[63.81.87.144]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Apr  4 15:24:30 mail.srvfarm.net postfix/smtpd[3318077]: NOQUEUE: reject: RCPT from unknown[63.81.87.144]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Apr  4 15:25:55 mail.srvfarm.net postfix/smtpd[3314744]: NOQUEUE: reject: RCPT from unknown[63.81.87.144]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Apr  4 15:26:40 mail.srvfarm.net postfix/smtpd[3301977]: NOQUEUE: reject: RCPT from unknown[63.81.87.144]: 450 4.1.8 :

Apr  4 05:30:07 web01.agentur-b-2.de postfix/smtpd[920628]: NOQUEUE: reject: RCPT from unknown[63.81.87.178]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Apr  4 05:30:13 web01.agentur-b-2.de postfix/smtpd[920628]: NOQUEUE: reject: RCPT from unknown[63.81.87.178]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Apr  4 05:32:45 web01.agentur-b-2.de postfix/smtpd[920628]: NOQUEUE: reject: RCPT from unknown[63.81.87.178]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Apr  4 05:33:38 web01.agentur-b-2.de postfix/smtpd[920628]: NOQUEUE: reject: RCPT from unknown[63.81.87.178]: 450 4.7.1 

(RCPT) RCPT NOT ALLOWED FROM  63.81.87.167 (US/United States/-): 1 in the last 3600 secs

Apr  2 05:35:44 mail.srvfarm.net postfix/smtpd[1755935]: NOQUEUE: reject: RCPT from unknown[63.81.87.146]: 554 5.7.1 Service unavailable; Client host [63.81.87.146] blocked using zen.spamhaus.org; https://www.spamhaus.org/sbl/query/SBLCSS; from= to= proto=ESMTP helo=
Apr  2 05:35:44 mail.srvfarm.net postfix/smtpd[1753858]: NOQUEUE: reject: RCPT from unknown[63.81.87.146]: 554 5.7.1 Service unavailable; Client host [63.81.87.146] blocked using zen.spamhaus.org; https://www.spamhaus.org/sbl/query/SBLCSS; from= to= proto=ESMTP helo=
Apr  2 05:35:45 mail.srvfarm.net postfix/smtpd[1755903]: NOQUEUE: reject: RCPT from unknown[63.81.87.146]: 554 5.7.1 Service unavailable; Client host [63.81.87.146] blocked using zen.spamhaus.org; https://www.spamhaus.org/sbl/query/SBLCSS; from= to= proto=ESMTP helo=

Apr  2 06:54:55 web01.agentur-b-2.de postfix/smtpd[72992]: NOQUEUE: reject: RCPT from unknown[63.81.87.151]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Apr  2 06:54:55 web01.agentur-b-2.de postfix/smtpd[77755]: NOQUEUE: reject: RCPT from unknown[63.81.87.151]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Apr  2 06:54:55 web01.agentur-b-2.de postfix/smtpd[77756]: NOQUEUE: reject: RCPT from unknown[63.81.87.151]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Apr  2 06:54:55 web01.agentur-b-2.de postfix/smtpd[77758]: NOQUEUE: reject: RCPT from unknown[63.81.87.151]: 450 4.7.1 : Helo command rejected: Host not found; from=

Mar 31 23:29:39 mail.srvfarm.net postfix/smtpd[783722]: NOQUEUE: reject: RCPT from unknown[63.81.87.159]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 31 23:29:41 mail.srvfarm.net postfix/smtpd[783721]: NOQUEUE: reject: RCPT from unknown[63.81.87.159]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 31 23:30:28 mail.srvfarm.net postfix/smtpd[796986]: NOQUEUE: reject: RCPT from unknown[63.81.87.159]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 31 23:31:50 mail.srvfarm.net postfix/smtpd[778578]: NOQUEUE

Mar 30 05:24:03 tux postfix/smtpd[14066]: connect from unknown[63.81.87.157]
Mar x@x
Mar 30 05:24:04 tux postfix/smtpd[14066]: disconnect from unknown[63.81.87.157]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=63.81.87.157

Mar 29 05:33:39 mail.srvfarm.net postfix/smtpd[755834]: NOQUEUE: reject: RCPT from unknown[63.81.87.146]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 29 05:35:33 mail.srvfarm.net postfix/smtpd[774356]: NOQUEUE: reject: RCPT from unknown[63.81.87.146]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 29 05:35:42 mail.srvfarm.net postfix/smtpd[755659]: NOQUEUE: reject: RCPT from unknown[63.81.87.146]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 29 05:37:35 mail.srvfarm.net postfix/smtpd[756001]: NOQUEU

Mar 22 05:36:09 mail.srvfarm.net postfix/smtpd[562348]: NOQUEUE: reject: RCPT from unknown[63.81.87.152]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 22 05:36:26 mail.srvfarm.net postfix/smtpd[562346]: NOQUEUE: reject: RCPT from unknown[63.81.87.152]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 22 05:37:58 mail.srvfarm.net postfix/smtpd[557306]: NOQUEUE: reject: RCPT from unknown[63.81.87.152]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 22 05:37:58 mail.srvfarm.net postfix/smtpd[561117]: NOQUEUE: reject: RCPT from unknown[63.81.87.152]: 450 4.1.8 : Sender address

Mar 20 05:34:59 mail.srvfarm.net postfix/smtpd[2604122]: NOQUEUE: reject: RCPT from unknown[63.81.87.179]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 20 05:34:59 mail.srvfarm.net postfix/smtpd[2603295]: NOQUEUE: reject: RCPT from unknown[63.81.87.179]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 20 05:35:05 mail.srvfarm.net postfix/smtpd[2603273]: NOQUEUE: reject: RCPT from unknown[63.81.87.179]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 20 05:35:07 mail.srvfarm.net postfix/smtpd[2588041]: NOQUEUE: reject: RCPT from unknown[63.81.87.179]: 450 4.1.8 

Mar 17 01:28:30 mail.srvfarm.net postfix/smtpd[575988]: NOQUEUE: reject: RCPT from unknown[63.81.87.170]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 17 01:28:33 mail.srvfarm.net postfix/smtpd[588708]: NOQUEUE: reject: RCPT from unknown[63.81.87.170]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 17 01:30:31 mail.srvfarm.net postfix/smtpd[588739]: NOQUEUE: reject: RCPT from unknown[63.81.87.170]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 17 01:30:32 mail.srvfarm.net postfix/smtpd[575986]: NOQUEUE: reject: RCPT from unknown[63.81.87.170]: 450 4.1.8 

Mar 16 16:25:31 mail.srvfarm.net postfix/smtpd[249206]: NOQUEUE: reject: RCPT from unknown[63.81.87.145]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 16 16:25:41 mail.srvfarm.net postfix/smtpd[249187]: NOQUEUE: reject: RCPT from unknown[63.81.87.145]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 16 16:26:04 mail.srvfarm.net postfix/smtpd[220455]: NOQUEUE: reject: RCPT from unknown[63.81.87.145]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 16 16:26:31 mail.srvfarm.net postfix/smtpd[249188]: NOQUEUE: reject: RCPT from unknown[63.81.87.145]: 450 4.1.8 

Mar 12 13:47:08 mail.srvfarm.net postfix/smtpd[1811060]: NOQUEUE: reject: RCPT from unknown[63.81.87.140]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 12 13:47:08 mail.srvfarm.net postfix/smtpd[1830689]: NOQUEUE: reject: RCPT from unknown[63.81.87.140]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 12 13:47:08 mail.srvfarm.net postfix/smtpd[1830650]: NOQUEUE: reject: RCPT from unknown[63.81.87.140]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 12 13:47:08 mail.srvfarm.net postfix/smtpd[1827922]: NOQUEUE: reject: RCPT from unknown[63.81.87.140]: 450 4.1.8 

Mar 12 04:41:19 mail.srvfarm.net postfix/smtpd[1642187]: NOQUEUE: reject: RCPT from unknown[63.81.87.174]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 12 04:41:24 mail.srvfarm.net postfix/smtpd[1636114]: NOQUEUE: reject: RCPT from unknown[63.81.87.174]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 12 04:41:48 mail.srvfarm.net postfix/smtpd[1642190]: NOQUEUE: reject: RCPT from unknown[63.81.87.174]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 12 04:44:06 mail.srvfarm.net postfix/smtpd[1642190]: NOQUEUE: reject: RCPT from unknown[63.81.87.174]: 450 4.1.8 : Sender address rejected: Domain not found;

Mar 10 04:32:26 web01 postfix/smtpd[4013]: connect from unknown[63.81.87.142]
Mar 10 04:32:26 web01 policyd-spf[4019]: None; identhostnamey=helo; client-ip=63.81.87.142; helo=mature.svcoding.com; envelope-from=x@x
Mar 10 04:32:26 web01 policyd-spf[4019]: Pass; identhostnamey=mailfrom; client-ip=63.81.87.142; helo=mature.svcoding.com; envelope-from=x@x
Mar x@x
Mar 10 04:32:27 web01 postfix/smtpd[4013]: disconnect from unknown[63.81.87.142]
Mar 10 04:33:00 web01 postfix/smtpd[4013]: connect from unknown[63.81.87.142]
Mar 10 04:33:01 web01 policyd-spf[4019]: None; identhostnamey=helo; client-ip=63.81.87.142; helo=mature.svcoding.com; envelope-from=x@x
Mar 10 04:33:01 web01 policyd-spf[4019]: Pass; identhostnamey=mailfrom; client-ip=63.81.87.142; helo=mature.svcoding.com; envelope-from=x@x
Mar x@x
Mar 10 04:33:01 web01 postfix/smtpd[4013]: disconnect from unknown[63.81.87.142]
Mar 10 04:38:17 web01 postfix/smtpd[3383]: connect from unknown[63.81.87.142]
Mar 10 04:38:17 web0........
-------------------------------

[Thu Jul 02 16:31:25 2020] - DDoS Attack From IP: 192.241.223.25 Port: 33376

Honeypot attack, port: 445, PTR: static.vnpt.vn.

reported through recidive - multiple failed attempts(SSH)

Failed password for invalid user pli from 120.71.146.45 port 49007 ssh2

2020-07-04T01:28:45.410234hostname sshd[31939]: Failed password for invalid user zhang from 120.53.24.140 port 40896 ssh2
...

k+ssh-bruteforce

2020-07-05T18:27:16.369051abusebot-3.cloudsearch.cf sshd[11132]: Invalid user istian from 63.240.240.74 port 52555
2020-07-05T18:27:16.374910abusebot-3.cloudsearch.cf sshd[11132]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=63.240.240.74
2020-07-05T18:27:16.369051abusebot-3.cloudsearch.cf sshd[11132]: Invalid user istian from 63.240.240.74 port 52555
2020-07-05T18:27:18.216999abusebot-3.cloudsearch.cf sshd[11132]: Failed password for invalid user istian from 63.240.240.74 port 52555 ssh2
2020-07-05T18:31:54.656868abusebot-3.cloudsearch.cf sshd[11325]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=63.240.240.74  user=root
2020-07-05T18:31:56.328571abusebot-3.cloudsearch.cf sshd[11325]: Failed password for root from 63.240.240.74 port 51395 ssh2
2020-07-05T18:36:26.707228abusebot-3.cloudsearch.cf sshd[11484]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=63.240.
...

995/tcp 161/udp 2375/tcp...
[2020-05-06/07-05]20pkt,4pt.(tcp),4pt.(udp)

Jul  5 20:41:49 lnxded64 sshd[16483]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.124.159
Jul  5 20:41:51 lnxded64 sshd[16483]: Failed password for invalid user admin from 128.199.124.159 port 47796 ssh2
Jul  5 20:46:11 lnxded64 sshd[17511]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.124.159

Jul  5 20:39:45 journals sshd\[66015\]: Invalid user itz from 49.235.111.100
Jul  5 20:39:45 journals sshd\[66015\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.235.111.100
Jul  5 20:39:46 journals sshd\[66015\]: Failed password for invalid user itz from 49.235.111.100 port 57412 ssh2
Jul  5 20:44:21 journals sshd\[66444\]: Invalid user centos from 49.235.111.100
Jul  5 20:44:21 journals sshd\[66444\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.235.111.100
...

445/tcp 3389/tcp 21/tcp...
[2020-05-06/07-05]27pkt,13pt.(tcp),1pt.(udp)

Jul  5 21:35:07 lukav-desktop sshd\[950\]: Invalid user deploy from 159.192.143.249
Jul  5 21:35:07 lukav-desktop sshd\[950\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.192.143.249
Jul  5 21:35:09 lukav-desktop sshd\[950\]: Failed password for invalid user deploy from 159.192.143.249 port 39834 ssh2
Jul  5 21:36:34 lukav-desktop sshd\[981\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.192.143.249  user=root
Jul  5 21:36:35 lukav-desktop sshd\[981\]: Failed password for root from 159.192.143.249 port 53216 ssh2

[portscan] Port scan

2020-07-05T19:54:09.759144vps773228.ovh.net sshd[20346]: Invalid user as from 118.89.247.168 port 43678
2020-07-05T19:54:09.774637vps773228.ovh.net sshd[20346]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.89.247.168
2020-07-05T19:54:09.759144vps773228.ovh.net sshd[20346]: Invalid user as from 118.89.247.168 port 43678
2020-07-05T19:54:11.501773vps773228.ovh.net sshd[20346]: Failed password for invalid user as from 118.89.247.168 port 43678 ssh2
2020-07-05T19:55:53.650110vps773228.ovh.net sshd[20378]: Invalid user vikram from 118.89.247.168 port 35202
...

Jul  5 18:08:30 onepixel sshd[2130444]: Invalid user murai from 140.246.218.162 port 32961
Jul  5 18:08:30 onepixel sshd[2130444]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.246.218.162 
Jul  5 18:08:30 onepixel sshd[2130444]: Invalid user murai from 140.246.218.162 port 32961
Jul  5 18:08:32 onepixel sshd[2130444]: Failed password for invalid user murai from 140.246.218.162 port 32961 ssh2
Jul  5 18:11:11 onepixel sshd[2131887]: Invalid user raja from 140.246.218.162 port 47759