Sep 29 00:25:57 mail.srvfarm.net postfix/smtpd[2235369]: NOQUEUE: reject: RCPT from unknown[194.150.235.8]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:26:59 mail.srvfarm.net postfix/smtpd[2235351]: NOQUEUE: reject: RCPT from unknown[194.150.235.8]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:28:29 mail.srvfarm.net postfix/smtpd[2237844]: NOQUEUE: reject: RCPT from unknown[194.150.235.8]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:29:29 mail.srvfarm.net postfix/smtpd[2071208]: NOQUEUE: reject: RCPT from unknown[194.150.235.8]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=

Sep 29 00:57:46 web01.agentur-b-2.de postfix/smtpd[1816916]: NOQUEUE: reject: RCPT from unknown[194.150.235.35]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:58:54 web01.agentur-b-2.de postfix/smtpd[1816916]: NOQUEUE: reject: RCPT from unknown[194.150.235.35]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:59:55 web01.agentur-b-2.de postfix/smtpd[1812934]: NOQUEUE: reject: RCPT from unknown[194.150.235.35]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 01:01:03 web01.agentur-b-2.de postfix/smtpd[1812934]: NOQUEUE: reject: RCPT from unknown[194.150.235.35]: 450 4.7.1 : Helo command rejected

Sep 29 00:25:57 mail.srvfarm.net postfix/smtpd[2235369]: NOQUEUE: reject: RCPT from unknown[194.150.235.8]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:26:59 mail.srvfarm.net postfix/smtpd[2235351]: NOQUEUE: reject: RCPT from unknown[194.150.235.8]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:28:29 mail.srvfarm.net postfix/smtpd[2237844]: NOQUEUE: reject: RCPT from unknown[194.150.235.8]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:29:29 mail.srvfarm.net postfix/smtpd[2071208]: NOQUEUE: reject: RCPT from unknown[194.150.235.8]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=

Sep 29 00:57:46 web01.agentur-b-2.de postfix/smtpd[1816916]: NOQUEUE: reject: RCPT from unknown[194.150.235.35]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:58:54 web01.agentur-b-2.de postfix/smtpd[1816916]: NOQUEUE: reject: RCPT from unknown[194.150.235.35]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:59:55 web01.agentur-b-2.de postfix/smtpd[1812934]: NOQUEUE: reject: RCPT from unknown[194.150.235.35]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 01:01:03 web01.agentur-b-2.de postfix/smtpd[1812934]: NOQUEUE: reject: RCPT from unknown[194.150.235.35]: 450 4.7.1 : Helo command rejected

Sep 29 00:25:57 mail.srvfarm.net postfix/smtpd[2235369]: NOQUEUE: reject: RCPT from unknown[194.150.235.8]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:26:59 mail.srvfarm.net postfix/smtpd[2235351]: NOQUEUE: reject: RCPT from unknown[194.150.235.8]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:28:29 mail.srvfarm.net postfix/smtpd[2237844]: NOQUEUE: reject: RCPT from unknown[194.150.235.8]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:29:29 mail.srvfarm.net postfix/smtpd[2071208]: NOQUEUE: reject: RCPT from unknown[194.150.235.8]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=

Sep 29 00:57:46 web01.agentur-b-2.de postfix/smtpd[1816916]: NOQUEUE: reject: RCPT from unknown[194.150.235.35]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:58:54 web01.agentur-b-2.de postfix/smtpd[1816916]: NOQUEUE: reject: RCPT from unknown[194.150.235.35]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 00:59:55 web01.agentur-b-2.de postfix/smtpd[1812934]: NOQUEUE: reject: RCPT from unknown[194.150.235.35]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 29 01:01:03 web01.agentur-b-2.de postfix/smtpd[1812934]: NOQUEUE: reject: RCPT from unknown[194.150.235.35]: 450 4.7.1 : Helo command rejected

Sep 23 12:13:13 web01.agentur-b-2.de postfix/smtpd[1825596]: NOQUEUE: reject: RCPT from unknown[194.150.235.254]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 23 12:14:13 web01.agentur-b-2.de postfix/smtpd[1825596]: NOQUEUE: reject: RCPT from unknown[194.150.235.254]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 23 12:15:14 web01.agentur-b-2.de postfix/smtpd[1825596]: NOQUEUE: reject: RCPT from unknown[194.150.235.254]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 23 12:16:14 web01.agentur-b-2.de postfix/smtpd[1824194]: NOQUEUE: reject: RCPT from unknown[194.150.235.254]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=

Sep 23 06:05:00 mail.srvfarm.net postfix/smtpd[4073262]: NOQUEUE: reject: RCPT from unknown[194.150.235.195]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Sep 23 06:06:00 mail.srvfarm.net postfix/smtpd[4073260]: NOQUEUE: reject: RCPT from unknown[194.150.235.195]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Sep 23 06:07:31 mail.srvfarm.net postfix/smtpd[4076691]: NOQUEUE: reject: RCPT from unknown[194.150.235.195]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP helo=
Sep 23 06:08:32 mail.srvfarm.net postfix/smtpd[4073268]: NOQUEUE: reject: RCPT from unknown[194.150.235.195]: 450 4.7.1 : Helo command rejected: Host not found

Sep 23 05:45:03 web01.agentur-b-2.de postfix/smtpd[1642740]: NOQUEUE: reject: RCPT from unknown[194.150.235.254]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 23 05:46:03 web01.agentur-b-2.de postfix/smtpd[1642740]: NOQUEUE: reject: RCPT from unknown[194.150.235.254]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 23 05:47:03 web01.agentur-b-2.de postfix/smtpd[1662175]: NOQUEUE: reject: RCPT from unknown[194.150.235.254]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 23 05:48:03 web01.agentur-b-2.de postfix/smtpd[1659745]: NOQUEUE: reject: RCPT from unknown[194.150.235.254]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=

Sep 22 21:09:39 web01.agentur-b-2.de postfix/smtpd[1294058]: NOQUEUE: reject: RCPT from unknown[194.150.235.195]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 22 21:10:40 web01.agentur-b-2.de postfix/smtpd[1297645]: NOQUEUE: reject: RCPT from unknown[194.150.235.195]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 22 21:11:39 web01.agentur-b-2.de postfix/smtpd[1315478]: NOQUEUE: reject: RCPT from unknown[194.150.235.195]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 22 21:12:39 web01.agentur-b-2.de postfix/smtpd[1315478]: NOQUEUE: reject: RCPT from unknown[194.150.235.195]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP h

Sep 22 21:08:52 web01.agentur-b-2.de postfix/smtpd[1296295]: NOQUEUE: reject: RCPT from unknown[194.150.235.254]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 22 21:09:52 web01.agentur-b-2.de postfix/smtpd[1296295]: NOQUEUE: reject: RCPT from unknown[194.150.235.254]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 22 21:10:52 web01.agentur-b-2.de postfix/smtpd[1315478]: NOQUEUE: reject: RCPT from unknown[194.150.235.254]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=
Sep 22 21:11:52 web01.agentur-b-2.de postfix/smtpd[1315478]: NOQUEUE: reject: RCPT from unknown[194.150.235.254]: 450 4.7.1 : Helo command rejected: Host not found; from=<> to= proto=ESMTP helo=

SSH login attempts.

Apr  1 18:15:03 s158375 sshd[6313]: Failed password for root from 206.189.26.171 port 42198 ssh2

Apr  2 09:51:35 vlre-nyc-1 sshd\[6867\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.16.202.174  user=root
Apr  2 09:51:37 vlre-nyc-1 sshd\[6867\]: Failed password for root from 103.16.202.174 port 40430 ssh2
Apr  2 09:55:57 vlre-nyc-1 sshd\[6965\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.16.202.174  user=root
Apr  2 09:55:59 vlre-nyc-1 sshd\[6965\]: Failed password for root from 103.16.202.174 port 46943 ssh2
Apr  2 10:00:17 vlre-nyc-1 sshd\[7089\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.16.202.174  user=root
...

Chat Spam

Apr  2 05:47:01 ns382633 sshd\[32719\]: Invalid user aw from 190.131.201.122 port 43720
Apr  2 05:47:01 ns382633 sshd\[32719\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.131.201.122
Apr  2 05:47:02 ns382633 sshd\[32719\]: Failed password for invalid user aw from 190.131.201.122 port 43720 ssh2
Apr  2 05:52:52 ns382633 sshd\[1252\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.131.201.122  user=root
Apr  2 05:52:54 ns382633 sshd\[1252\]: Failed password for root from 190.131.201.122 port 36660 ssh2

Apr  2 13:23:43 lukav-desktop sshd\[8486\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=46.219.3.139  user=root
Apr  2 13:23:45 lukav-desktop sshd\[8486\]: Failed password for root from 46.219.3.139 port 37838 ssh2
Apr  2 13:27:35 lukav-desktop sshd\[8672\]: Invalid user renx from 46.219.3.139
Apr  2 13:27:35 lukav-desktop sshd\[8672\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=46.219.3.139
Apr  2 13:27:37 lukav-desktop sshd\[8672\]: Failed password for invalid user renx from 46.219.3.139 port 50060 ssh2

Apr  2 07:49:52 lukav-desktop sshd\[29814\]: Invalid user sc from 106.12.139.149
Apr  2 07:49:52 lukav-desktop sshd\[29814\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.139.149
Apr  2 07:49:54 lukav-desktop sshd\[29814\]: Failed password for invalid user sc from 106.12.139.149 port 43744 ssh2
Apr  2 07:53:23 lukav-desktop sshd\[30014\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.139.149  user=root
Apr  2 07:53:25 lukav-desktop sshd\[30014\]: Failed password for root from 106.12.139.149 port 54526 ssh2

Apr  2 11:49:00 vps sshd[710096]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=79.173.253.50
Apr  2 11:49:02 vps sshd[710096]: Failed password for invalid user user from 79.173.253.50 port 49110 ssh2
Apr  2 11:53:17 vps sshd[736451]: Invalid user jinwen from 79.173.253.50 port 61672
Apr  2 11:53:17 vps sshd[736451]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=79.173.253.50
Apr  2 11:53:19 vps sshd[736451]: Failed password for invalid user jinwen from 79.173.253.50 port 61672 ssh2
...

Apr  1 19:27:23 server sshd\[29067\]: Failed password for root from 110.73.182.205 port 22215 ssh2
Apr  2 10:11:49 server sshd\[17323\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=110.73.182.205  user=bin
Apr  2 10:11:49 server sshd\[17321\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=110.73.182.205  user=bin
Apr  2 10:11:50 server sshd\[17323\]: Failed password for bin from 110.73.182.205 port 46917 ssh2
Apr  2 10:11:50 server sshd\[17321\]: Failed password for bin from 110.73.182.205 port 22048 ssh2
...

Apr  2 06:59:48 ny01 sshd[11580]: Failed password for root from 222.186.169.192 port 47126 ssh2
Apr  2 06:59:51 ny01 sshd[11580]: Failed password for root from 222.186.169.192 port 47126 ssh2
Apr  2 06:59:55 ny01 sshd[11580]: Failed password for root from 222.186.169.192 port 47126 ssh2
Apr  2 07:00:03 ny01 sshd[11580]: error: maximum authentication attempts exceeded for root from 222.186.169.192 port 47126 ssh2 [preauth]

Apr  2 12:28:18 markkoudstaal sshd[16773]: Failed password for root from 51.38.234.3 port 57792 ssh2
Apr  2 12:29:59 markkoudstaal sshd[16995]: Failed password for root from 51.38.234.3 port 48598 ssh2

port scan and connect, tcp 1433 (ms-sql-s)

Apr  2 10:03:41 silence02 sshd[22374]: Failed password for root from 138.68.26.48 port 60616 ssh2
Apr  2 10:07:03 silence02 sshd[22743]: Failed password for root from 138.68.26.48 port 60550 ssh2

CN China - Hits: 11

Apr  2 12:27:24 srv206 sshd[17700]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.239.99  user=root
Apr  2 12:27:26 srv206 sshd[17700]: Failed password for root from 157.230.239.99 port 42624 ssh2
Apr  2 12:39:49 srv206 sshd[17763]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.239.99  user=root
Apr  2 12:39:51 srv206 sshd[17763]: Failed password for root from 157.230.239.99 port 55114 ssh2
...