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 

Dec 27 16:45:14 grey postfix/smtpd\[11568\]: NOQUEUE: reject: RCPT from tremble.jcnovel.com\[63.81.87.178\]: 554 5.7.1 Service unavailable\; Client host \[63.81.87.178\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[63.81.87.178\]\; from=\ to=\ proto=ESMTP helo=\
...

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 :

(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........
-------------------------------

Mar  9 04:40:47 mail.srvfarm.net postfix/smtpd[3846783]: NOQUEUE: reject: RCPT from unknown[63.81.87.185]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar  9 04:42:30 mail.srvfarm.net postfix/smtpd[3846778]: NOQUEUE: reject: RCPT from unknown[63.81.87.185]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar  9 04:48:48 mail.srvfarm.net postfix/smtpd[3846778]: NOQUEUE: reject: RCPT from unknown[63.81.87.185]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar  9 04:48:49 mail.srvfarm.net postfix/smtpd[3846781]: NOQUEUE: reject: RCPT from unknown[63.81.87.185]: 450 4.1.8 

DATE:2020-09-20 19:04:05, IP:27.6.246.167, PORT:telnet - Telnet brute force auth on a honeypot server (epe-dc)

(sshd) Failed SSH login from 79.18.88.6 (IT/Italy/host-79-18-88-6.retail.telecomitalia.it): 3 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Sep 20 13:03:53 internal2 sshd[8103]: Invalid user admin from 79.18.88.6 port 40675
Sep 20 13:03:55 internal2 sshd[8128]: Invalid user admin from 79.18.88.6 port 40731
Sep 20 13:03:57 internal2 sshd[8188]: Invalid user admin from 79.18.88.6 port 40791

172.91.39.2 (US/United States/cpe-172-91-39-2.socal.res.rr.com), 3 distributed sshd attacks on account [admin] in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_DISTATTACK; Logs: Sep 20 12:59:18 internal2 sshd[4123]: Invalid user admin from 124.180.32.34 port 47169
Sep 20 13:03:52 internal2 sshd[8106]: Invalid user admin from 172.91.39.2 port 56478
Sep 20 12:59:15 internal2 sshd[4103]: Invalid user admin from 124.180.32.34 port 47148

IP Addresses Blocked:

124.180.32.34 (AU/Australia/cpe-124-180-32-34.ab01.act.asp.telstra.net)

Sep 20 22:03:08 webserver postfix/smtpd\[13142\]: warning: unknown\[212.70.149.83\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 20 22:03:34 webserver postfix/smtpd\[13142\]: warning: unknown\[212.70.149.83\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 20 22:04:00 webserver postfix/smtpd\[13142\]: warning: unknown\[212.70.149.83\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 20 22:04:26 webserver postfix/smtpd\[13096\]: warning: unknown\[212.70.149.83\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 20 22:04:51 webserver postfix/smtpd\[13141\]: warning: unknown\[212.70.149.83\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...

Sep 20 21:12:36 ip106 sshd[27264]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=64.225.119.100 
Sep 20 21:12:38 ip106 sshd[27264]: Failed password for invalid user test from 64.225.119.100 port 60812 ssh2
...

Bruteforce detected by fail2ban

Sep 20 21:15:02 sd-69548 sshd[2437365]: Unable to negotiate with 61.177.172.61 port 36921: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1 [preauth]
Sep 20 21:58:43 sd-69548 sshd[2440419]: Unable to negotiate with 61.177.172.61 port 64748: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1 [preauth]
...

spf=fail (google.com: domain of 4cef9mqfyuft@eikoncg.com does not designate 52.100.173.244 as permitted sender) smtp.mailfrom=4CEF9MQFyUfT@eikoncg.com;

Sep 20 12:53:05 r.ca sshd[14262]: Failed password for invalid user test from 203.88.129.74 port 39440 ssh2

103.146.202.150 - - [20/Sep/2020:18:03:58 +0100] "POST /wp-login.php HTTP/1.1" 401 3568 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
103.146.202.150 - - [20/Sep/2020:18:04:01 +0100] "POST /wp-login.php HTTP/1.1" 401 3568 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
103.146.202.150 - - [20/Sep/2020:18:04:02 +0100] "POST /xmlrpc.php HTTP/1.1" 403 219 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
...

$f2bV_matches

IP was detected trying to Brute-Force SSH, FTP, Web Apps, Port-Scan or Hacking.

Failed password for root from 95.85.39.74 port 51252 ssh2
Invalid user minecraft from 95.85.39.74 port 33454
pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=netbloghost.com
Invalid user minecraft from 95.85.39.74 port 33454
Failed password for invalid user minecraft from 95.85.39.74 port 33454 ssh2

Attempt to hack Wordpress Login, XMLRPC or other login

Too many connection attempt to nonexisting ports