Dec 18 07:28:49  exim[28362]: [1\51] 1ihSpD-0007NS-Mk H=delicate.vidyad.com (delicate.alibash.com) [63.81.87.73] F= rejected after DATA: This message scored 99.8 spam points.

Dec 14 08:18:55 grey postfix/smtpd\[25608\]: NOQUEUE: reject: RCPT from delicate.vidyad.com\[63.81.87.73\]: 554 5.7.1 Service unavailable\; Client host \[63.81.87.73\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[63.81.87.73\]\; from=\ to=\ proto=ESMTP helo=\
...

Autoban   63.81.87.73 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........
-------------------------------

1597376201 - 08/14/2020 05:36:41 Host: 115.79.62.225/115.79.62.225 Port: 445 TCP Blocked

SSH brute-force attempt

Aug 14 07:52:50 vps639187 sshd\[16021\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=162.243.170.252  user=root
Aug 14 07:52:52 vps639187 sshd\[16021\]: Failed password for root from 162.243.170.252 port 58382 ssh2
Aug 14 07:56:59 vps639187 sshd\[16072\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=162.243.170.252  user=root
...

Port Scan
...

Banned for a week because repeated abuses, for example SSH, but not only

Aug 14 06:36:57 hosting sshd[12660]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.141.46.154  user=root
Aug 14 06:36:58 hosting sshd[12660]: Failed password for root from 103.141.46.154 port 54554 ssh2
...

Aug 14 10:15:44 abendstille sshd\[17467\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.177.172.102  user=root
Aug 14 10:15:46 abendstille sshd\[17467\]: Failed password for root from 61.177.172.102 port 60555 ssh2
Aug 14 10:15:49 abendstille sshd\[17467\]: Failed password for root from 61.177.172.102 port 60555 ssh2
Aug 14 10:15:50 abendstille sshd\[17467\]: Failed password for root from 61.177.172.102 port 60555 ssh2
Aug 14 10:15:52 abendstille sshd\[17584\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.177.172.102  user=root
...

Automatic report - Banned IP Access

Aug 13 23:36:53 mail sshd\[36631\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.191.23.15  user=root
...

(sshd) Failed SSH login from 77.109.173.12 (CH/Switzerland/77.109.173.12.easyzone.ch): 5 in the last 3600 secs

<6 unauthorized SSH connections

Automatic report - Banned IP Access

detected by Fail2Ban

sshd jail - ssh hack attempt

199.192.20.159 - - [14/Aug/2020:09:16:21 +0100] "POST /wp-login.php HTTP/1.1" 200 2345 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
199.192.20.159 - - [14/Aug/2020:09:16:23 +0100] "POST /wp-login.php HTTP/1.1" 200 2329 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
199.192.20.159 - - [14/Aug/2020:09:16:24 +0100] "POST /wp-login.php HTTP/1.1" 200 2329 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
...