Mar 27 05:46:49 mail.srvfarm.net postfix/smtpd[3721997]: NOQUEUE: reject: RCPT from unknown[63.82.48.56]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 27 05:49:29 mail.srvfarm.net postfix/smtpd[3721908]: NOQUEUE: reject: RCPT from unknown[63.82.48.56]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 27 05:49:58 mail.srvfarm.net postfix/smtpd[3722006]: NOQUEUE: reject: RCPT from unknown[63.82.48.56]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar 27 05:50:12 mail.srvfarm.net postfix/smtpd[3721998]:

Jun 10 05:40:34 mail.srvfarm.net postfix/smtpd[2068244]: NOQUEUE: reject: RCPT from unknown[63.82.48.245]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Jun 10 05:41:13 mail.srvfarm.net postfix/smtpd[2068037]: NOQUEUE: reject: RCPT from unknown[63.82.48.245]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Jun 10 05:44:06 mail.srvfarm.net postfix/smtpd[2068244]: NOQUEUE: reject: RCPT from unknown[63.82.48.245]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Jun 10 05:44:51 mail.srvfarm.net postfix/smtpd[2067986]: NOQUEUE: reject: RCPT from unknown[63.82.48.245]: 450 4.1.8 : Sender addr

Jun  5 17:26:18 web01.agentur-b-2.de postfix/smtpd[255076]: NOQUEUE: reject: RCPT from unknown[63.82.48.200]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Jun  5 17:26:18 web01.agentur-b-2.de postfix/smtpd[256572]: NOQUEUE: reject: RCPT from unknown[63.82.48.200]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Jun  5 17:29:00 web01.agentur-b-2.de postfix/smtpd[256572]: NOQUEUE: reject: RCPT from unknown[63.82.48.200]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Jun  5 17:34:35 web01.agentur-b-2.de postfix/smtpd[255076]: NOQUEUE: reject: RCPT from unknown[63.82.48.200]: 450 4.7.1 

Jun  5 16:37:47 mail.srvfarm.net postfix/smtpd[3129216]: NOQUEUE: reject: RCPT from unknown[63.82.48.254]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Jun  5 16:42:01 mail.srvfarm.net postfix/smtpd[3132026]: NOQUEUE: reject: RCPT from unknown[63.82.48.254]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Jun  5 16:44:00 mail.srvfarm.net postfix/smtpd[3129250]: NOQUEUE: reject: RCPT from unknown[63.82.48.254]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Jun  5 16:46:39 mail.srvfarm.net postfix/smtpd[3132026]: NOQUEUE: reject: RCPT from unknown[63.82.48.254]: 450 4.1.8 

Postfix RBL failed

Jun  4 14:42:25 mail.srvfarm.net postfix/smtpd[2524285]: NOQUEUE: reject: RCPT from discover.jdmbrosllc.com[63.82.48.233]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Jun  4 14:42:46 mail.srvfarm.net postfix/smtpd[2523659]: NOQUEUE: reject: RCPT from discover.jdmbrosllc.com[63.82.48.233]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Jun  4 14:43:25 mail.srvfarm.net postfix/smtpd[2523656]: NOQUEUE: reject: RCPT from discover.jdmbrosllc.com[63.82.48.233]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Jun  4 14:43:48 mail.srvfarm.net postfix/smtpd[2523330]: NOQUEUE: reject: RCPT from d

Jun  1 13:37:52 web01.agentur-b-2.de postfix/smtpd[592715]: NOQUEUE: reject: RCPT from unknown[63.82.48.244]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Jun  1 13:38:06 web01.agentur-b-2.de postfix/smtpd[591656]: NOQUEUE: reject: RCPT from unknown[63.82.48.244]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Jun  1 13:38:09 web01.agentur-b-2.de postfix/smtpd[592715]: NOQUEUE: reject: RCPT from unknown[63.82.48.244]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Jun  1 13:40:53 web01.agentur-b-2.de postfix/smtpd[592715]: NOQUEUE: reject: RCPT from unknown[63.82.48.244]: 450 4.7.1 : Helo command rej

May 20 01:33:40 web01.agentur-b-2.de postfix/smtpd[459681]: NOQUEUE: reject: RCPT from unknown[63.82.48.253]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
May 20 01:37:38 web01.agentur-b-2.de postfix/smtpd[461049]: NOQUEUE: reject: RCPT from unknown[63.82.48.253]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
May 20 01:38:17 web01.agentur-b-2.de postfix/smtpd[459681]: NOQUEUE: reject: RCPT from unknown[63.82.48.253]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
May 20 01:43:33 web01.agentur-b-2.de postfix/smtpd[459681]: NOQUEUE: reject: RCPT from unknown[63.82.48.253]: 450 4.7.1 

2020-05-10 H=pie.jdmbrosllc.com \(pie.ailacabs.com\) \[63.82.48.241\] F=\ rejected RCPT \<**REMOVED**_perl.org@**REMOVED**.de\>: Mail not accepted. 63.82.48.241 is listed at a DNSBL.
2020-05-10 H=pie.jdmbrosllc.com \(pie.ailacabs.com\) \[63.82.48.241\] F=\ rejected RCPT \<**REMOVED****REMOVED**perl.org@**REMOVED**.de\>: recipient blacklisted
2020-05-10 H=pie.jdmbrosllc.com \(pie.ailacabs.com\) \[63.82.48.241\] F=\ rejected RCPT \<**REMOVED**_last.fm@**REMOVED**.de\>: Mail not accepted. 63.82.48.241 is listed at a DNSBL.

May  5 06:30:37 web01.agentur-b-2.de postfix/smtpd[87093]: NOQUEUE: reject: RCPT from unknown[63.82.48.225]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
May  5 06:31:21 web01.agentur-b-2.de postfix/smtpd[87093]: NOQUEUE: reject: RCPT from unknown[63.82.48.225]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
May  5 06:33:34 web01.agentur-b-2.de postfix/smtpd[87277]: NOQUEUE: reject: RCPT from unknown[63.82.48.225]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
May  5 06:35:42 web01.agentur-b-2.de postfix/smtpd[87093]: NOQUEUE: reject: RCPT from unknown[63.82.48.225]: 450 4.7.1 : Helo command rejected: Host not found; f

May  2 05:34:14 web01.agentur-b-2.de postfix/smtpd[976469]: NOQUEUE: reject: RCPT from unknown[63.82.48.236]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
May  2 05:34:15 web01.agentur-b-2.de postfix/smtpd[976089]: NOQUEUE: reject: RCPT from unknown[63.82.48.236]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
May  2 05:35:52 web01.agentur-b-2.de postfix/smtpd[978764]: NOQUEUE: reject: RCPT from unknown[63.82.48.236]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
May  2 05:39:08 web01.agentur-b-2.de postfix/smtpd[983789]: NOQUEUE: reject: RCPT from unknown[63.82.48.236]: 450 4.7.1 : Helo command rejected:

May  1 15:00:00 mail.srvfarm.net postfix/smtpd[1274237]: NOQUEUE: reject: RCPT from unknown[63.82.48.245]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
May  1 15:00:36 mail.srvfarm.net postfix/smtpd[1274215]: NOQUEUE: reject: RCPT from unknown[63.82.48.245]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
May  1 15:00:40 mail.srvfarm.net postfix/smtpd[1274325]: NOQUEUE: reject: RCPT from unknown[63.82.48.245]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
May  1 15:01:29 mail.srvfarm.net postfix/smtpd[1271594]: NOQUEUE: reject: RCPT from unknown[63.82.48.245]: 450 4.1.8 

Apr 30 22:31:47 mail.srvfarm.net postfix/smtpd[773728]: NOQUEUE: reject: RCPT from unknown[63.82.48.244]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Apr 30 22:33:11 mail.srvfarm.net postfix/smtpd[773728]: NOQUEUE: reject: RCPT from unknown[63.82.48.244]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Apr 30 22:33:19 mail.srvfarm.net postfix/smtpd[777594]: NOQUEUE: reject: RCPT from unknown[63.82.48.244]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Apr 30 22:34:05 mail.srvfarm.net postfix/smtpd[778258]: NOQUEUE: reject: RCPT from unknown[63.82.48.244]: 450 4.1.8 : Sender addres

Apr 29 13:47:16 web01.agentur-b-2.de postfix/smtpd[1084617]: NOQUEUE: reject: RCPT from unknown[63.82.48.203]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Apr 29 13:47:16 web01.agentur-b-2.de postfix/smtpd[1084901]: NOQUEUE: reject: RCPT from unknown[63.82.48.203]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Apr 29 13:47:16 web01.agentur-b-2.de postfix/smtpd[1089891]: NOQUEUE: reject: RCPT from unknown[63.82.48.203]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Apr 29 13:47:16 web01.agentur-b-2.de postfix/smtpd[1089892]: NOQUEUE: reject: RCPT from unknown[63.82.

Apr 25 05:49:59 mail.srvfarm.net postfix/smtpd[854255]: NOQUEUE: reject: RCPT from unknown[63.82.48.242]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Apr 25 05:50:00 mail.srvfarm.net postfix/smtpd[854253]: NOQUEUE: reject: RCPT from unknown[63.82.48.242]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Apr 25 05:50:00 mail.srvfarm.net postfix/smtpd[854252]: NOQUEUE: reject: RCPT from unknown[63.82.48.242]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Apr 25 05:50:14 mail.srvfarm.net postfix/smtpd[853297]: NOQUEUE: reject: RCPT from unknown[63.82.48.242]: 450 4

Apr 24 05:31:51 web01.agentur-b-2.de postfix/smtpd[499241]: NOQUEUE: reject: RCPT from unknown[63.82.48.231]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Apr 24 05:35:28 web01.agentur-b-2.de postfix/smtpd[499263]: NOQUEUE: reject: RCPT from unknown[63.82.48.231]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Apr 24 05:35:51 web01.agentur-b-2.de postfix/smtpd[497817]: NOQUEUE: reject: RCPT from unknown[63.82.48.231]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Apr 24 05:36:27 web01.agentur-b-2.de postfix/smtpd[500606]: NOQUEUE: reject: RCPT from unknown[63.82.48.231]: 450 4.7.1 : Helo command rejected: Host no

Brute-force attempt banned

Dec 17 10:55:49 Ubuntu-1404-trusty-64-minimal sshd\[18191\]: Invalid user hellholm from 167.99.233.205
Dec 17 10:55:49 Ubuntu-1404-trusty-64-minimal sshd\[18191\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.99.233.205
Dec 17 10:55:51 Ubuntu-1404-trusty-64-minimal sshd\[18191\]: Failed password for invalid user hellholm from 167.99.233.205 port 37206 ssh2
Dec 17 11:04:47 Ubuntu-1404-trusty-64-minimal sshd\[30562\]: Invalid user asterisk from 167.99.233.205
Dec 17 11:04:47 Ubuntu-1404-trusty-64-minimal sshd\[30562\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.99.233.205

Dec 17 09:52:49 linuxvps sshd\[40752\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.67  user=root
Dec 17 09:52:51 linuxvps sshd\[40752\]: Failed password for root from 49.88.112.67 port 43121 ssh2
Dec 17 09:53:59 linuxvps sshd\[41523\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.67  user=root
Dec 17 09:54:01 linuxvps sshd\[41523\]: Failed password for root from 49.88.112.67 port 52526 ssh2
Dec 17 09:54:03 linuxvps sshd\[41523\]: Failed password for root from 49.88.112.67 port 52526 ssh2

Nov 24 02:50:39 microserver sshd[61541]: Invalid user satyr123 from 182.61.182.50 port 33542
Nov 24 02:50:39 microserver sshd[61541]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=182.61.182.50
Nov 24 02:50:40 microserver sshd[61541]: Failed password for invalid user satyr123 from 182.61.182.50 port 33542 ssh2
Nov 24 02:54:22 microserver sshd[61735]: Invalid user informixinformix from 182.61.182.50 port 40982
Nov 24 02:54:22 microserver sshd[61735]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=182.61.182.50
Nov 24 03:05:09 microserver sshd[63409]: Invalid user ssms from 182.61.182.50 port 35104
Nov 24 03:05:09 microserver sshd[63409]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=182.61.182.50
Nov 24 03:05:11 microserver sshd[63409]: Failed password for invalid user ssms from 182.61.182.50 port 35104 ssh2
Nov 24 03:09:03 microserver sshd[63698]: Invalid user abc123@123 from 182.61.182

Dec 17 15:38:43 vps691689 sshd[5359]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=184.13.240.142
Dec 17 15:38:45 vps691689 sshd[5359]: Failed password for invalid user blinn from 184.13.240.142 port 43142 ssh2
Dec 17 15:42:19 vps691689 sshd[5524]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=184.13.240.142
...

ssh failed login

2019-12-17T14:21:08.198155shield sshd\[29420\]: Invalid user guest from 104.248.29.180 port 55476
2019-12-17T14:21:08.203194shield sshd\[29420\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=stips20fund.io
2019-12-17T14:21:10.079909shield sshd\[29420\]: Failed password for invalid user guest from 104.248.29.180 port 55476 ssh2
2019-12-17T14:26:33.748202shield sshd\[30754\]: Invalid user fx from 104.248.29.180 port 37368
2019-12-17T14:26:33.752991shield sshd\[30754\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=stips20fund.io

Dec 17 14:31:15 localhost sshd[14701]: Failed password for root from 218.92.0.212 port 47004 ssh2
Dec 17 14:31:26 localhost sshd[14701]: Failed password for root from 218.92.0.212 port 47004 ssh2
Dec 17 14:31:28 localhost sshd[14701]: error: maximum authentication attempts exceeded for root from 218.92.0.212 port 47004 ssh2 [preauth]
Dec 17 14:31:35 localhost sshd[14705]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.92.0.212  user=root
Dec 17 14:31:38 localhost sshd[14705]: Failed password for root from 218.92.0.212 port 18434 ssh2

Telnet Server BruteForce Attack

Dec 17 15:26:30 ns381471 sshd[27977]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.65.54.221
Dec 17 15:26:32 ns381471 sshd[27977]: Failed password for invalid user user from 159.65.54.221 port 50680 ssh2

$f2bV_matches

Dec 17 09:41:19 linuxvps sshd\[33695\]: Invalid user merill from 70.89.88.1
Dec 17 09:41:19 linuxvps sshd\[33695\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=70.89.88.1
Dec 17 09:41:22 linuxvps sshd\[33695\]: Failed password for invalid user merill from 70.89.88.1 port 6772 ssh2
Dec 17 09:46:53 linuxvps sshd\[37122\]: Invalid user pupil1 from 70.89.88.1
Dec 17 09:46:53 linuxvps sshd\[37122\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=70.89.88.1

Dec 17 17:26:44 debian-2gb-vpn-nbg1-1 kernel: [971170.787463] [UFW BLOCK] IN=eth0 OUT= MAC=96:00:00:38:96:44:d2:74:7f:6e:37:e3:08:00 SRC=40.92.41.84 DST=78.46.192.101 LEN=40 TOS=0x00 PREC=0x00 TTL=232 ID=36901 DF PROTO=TCP SPT=6327 DPT=25 WINDOW=0 RES=0x00 ACK RST URGP=0

Invalid user conar from 107.170.235.19 port 36774
pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=107.170.235.19
Failed password for invalid user conar from 107.170.235.19 port 36774 ssh2
Invalid user nnn from 107.170.235.19 port 44746
pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=107.170.235.19

1576564148 - 12/17/2019 07:29:08 Host: 61.224.89.175/61.224.89.175 Port: 445 TCP Blocked