2019-10-14 H=\(\[193.32.160.142\]\) \[193.32.160.141\] F=\<7psty427pi4k1@mu17.ru\> rejected RCPT \: Unrouteable address
2019-10-14 H=\(\[193.32.160.142\]\) \[193.32.160.141\] F=\<7psty427pi4k1@mu17.ru\> rejected RCPT \: Unrouteable address
2019-10-14 H=\(\[193.32.160.142\]\) \[193.32.160.141\] F=\<7psty427pi4k1@mu17.ru\> rejected RCPT \: Unrouteable address

Oct  8 15:21:39 relay postfix/smtpd\[1466\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.141\]: 554 5.7.1 \: Relay access denied\; from=\<71n4w8glwawl@castolin.nl\> to=\ proto=ESMTP helo=\<\[193.32.160.135\]\>
Oct  8 15:21:39 relay postfix/smtpd\[1466\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.141\]: 554 5.7.1 \: Relay access denied\; from=\<71n4w8glwawl@castolin.nl\> to=\ proto=ESMTP helo=\<\[193.32.160.135\]\>
Oct  8 15:21:39 relay postfix/smtpd\[1466\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.141\]: 554 5.7.1 \: Relay access denied\; from=\<71n4w8glwawl@castolin.nl\> to=\ proto=ESMTP helo=\<\[193.32.160.135\]\>
Oct  8 15:21:39 relay postfix/smtpd\[1466\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.141\]: 554 5.7.1 \: Relay access denied\; from=\
...

SPAM Delivery Attempt

Sep 29 10:08:20 relay postfix/smtpd\[14462\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.141\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.142\]\>
Sep 29 10:08:20 relay postfix/smtpd\[14462\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.141\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.142\]\>
Sep 29 10:08:20 relay postfix/smtpd\[14462\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.141\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.142\]\>
Sep 29 10:08:20 relay postfix/smtpd\[14462\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.141\]: 554 5.7.1 \: Relay access denied\;
...

Sep 27 15:38:21 server postfix/smtpd[21477]: NOQUEUE: reject: RCPT from unknown[193.32.160.141]: 554 5.7.1 Service unavailable; Client host [193.32.160.141] blocked using zen.spamhaus.org; https://www.spamhaus.org/sbl/query/SBLCSS; from= to= proto=ESMTP helo=<[193.32.160.142]>
Sep 27 15:38:21 server postfix/smtpd[21477]: NOQUEUE: reject: RCPT from unknown[193.32.160.141]: 554 5.7.1 Service unavailable; Client host [193.32.160.141] blocked using zen.spamhaus.org; https://www.spamhaus.org/sbl/query/SBLCSS; from= to= proto=ESMTP helo=<[193.32.160.142]>

2019-09-26 06:02:20 H=([193.32.160.145]) [193.32.160.141]:64252 I=[192.147.25.65]:25 F=<9uztpi31eootl9t0@drnona.net> rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.3) (https://www.spamhaus.org/sbl/query/SBLCSS)
2019-09-26 06:02:20 H=([193.32.160.145]) [193.32.160.141]:64252 I=[192.147.25.65]:25 F=<9uztpi31eootl9t0@drnona.net> rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.3) (https://www.spamhaus.org/sbl/query/SBLCSS)
2019-09-26 06:02:20 H=([193.32.160.145]) [193.32.160.141]:64252 I=[192.147.25.65]:25 F=<9uztpi31eootl9t0@drnona.net> rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.3) (https://www.spamhaus.org/sbl/query/SBLCSS)
2019-09-26 06:02:20 H=([193.32.160.145]) [193.32.160.141]:64252 I=[192.147.25.65]:25 F=<9uztpi31eootl9t0@drnona.net> rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq
...

Blocked 193.32.160.141 For sending Not Local count 95

B: f2b postfix aggressive 3x

MagicSpam Rule: Excessive Mail Rate Inbound; Spammer IP: 193.32.160.141

SMTP:25. Blocked 328 login attempts in 13.1 days.

Brute force attack stopped by firewall

Nov 14 19:32:53 relay postfix/smtpd\[30601\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.151\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 19:32:53 relay postfix/smtpd\[30601\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.151\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 19:32:53 relay postfix/smtpd\[30601\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.151\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 19:32:53 relay postfix/smtpd\[30601\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.151\]: 554 5.7.1 \: Relay acces
...

Nov 14 19:48:35 relay postfix/smtpd\[31060\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.153\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 19:48:35 relay postfix/smtpd\[31060\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.153\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 19:48:35 relay postfix/smtpd\[31060\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.153\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 19:48:35 relay postfix/smtpd\[31060\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.153\]: 554 5.7.1 \: Relay access denied\; from=\ to=\

2019-11-14 13:07:21 H=([193.32.160.151]) [193.32.160.146]:40020 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.2, 127.0.0.3) (https://www.spamhaus.org/sbl/query/SBL462197)
2019-11-14 13:07:21 H=([193.32.160.151]) [193.32.160.146]:40020 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.2, 127.0.0.3) (https://www.spamhaus.org/sbl/query/SBL462197)
2019-11-14 13:07:21 H=([193.32.160.151]) [193.32.160.146]:40020 I=[192.147.25.65]:25 F= rejected RCPT : RBL: found in thrukfz5b56tq6xao6odgdyjrq.zen.dq.spamhaus.net (127.0.0.2, 127.0.0.3) (https://www.spamhaus.org/sbl/query/SBL462197)
2019-11-14 13:07:21 H=([193.32.160.151]) [193.32.160.146]:40020 I=[192.147.25.65]:25 F= rejected RCPT 

Nov 14 17:09:19 relay postfix/smtpd\[16983\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.154\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 17:09:19 relay postfix/smtpd\[16983\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.154\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 17:09:19 relay postfix/smtpd\[16983\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.154\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 17:09:19 relay postfix/smtpd\[16983\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.154\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP he
...

Nov 14 16:28:22 webserver postfix/smtpd\[31469\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.148\]: 454 4.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 16:28:22 webserver postfix/smtpd\[31469\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.148\]: 454 4.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 16:28:22 webserver postfix/smtpd\[31469\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.148\]: 454 4.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 16:28:22 webserver postfix/smtpd\[31469\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.148\]: 454 4.7.1 \: Relay access denied\;
...

Nov 14 16:15:27 webserver postfix/smtpd\[31469\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.147\]: 454 4.7.1 Service unavailable\; Client host \[193.32.160.147\] blocked using dnsbl.sorbs.net\; Exploitable Server See: http://www.sorbs.net/lookup.shtml\?193.32.160.147\; from=\<3eno8tsavk7tj@talavera.com.ua\> to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 16:15:27 webserver postfix/smtpd\[31469\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.147\]: 454 4.7.1 Service unavailable\; Client host \[193.32.160.147\] blocked using dnsbl.sorbs.net\; Exploitable Server See: http://www.sorbs.net/lookup.shtml\?193.32.160.147\; from=\<3eno8tsavk7tj@talavera.com.ua\> to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 16:15:27 webserver postfix/smtpd\[31469\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.147\]: 454 4.7.1 Service unavailable\; Client host \[193.32.160.147\] blocked using dnsbl.sorbs.net\; Exploitable Server See: http://www.sorbs.net/looku
...

SMTP:25. Blocked 322 login attempts in 11.5 days.

SMTP:25. Blocked 294 login attempts in 11.1 days.

SMTP:25. Blocked 347 login attempts in 11 days.

Nov 14 14:02:12 relay postfix/smtpd\[15937\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.150\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 14:02:12 relay postfix/smtpd\[15937\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.150\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 14:02:12 relay postfix/smtpd\[15937\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.150\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 14:02:12 relay postfix/smtpd\[15937\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.150\]: 554 5.7.1 \: Relay access denied\; from=\

Nov 14 14:52:31 staklim-malang postfix/smtpd[21281]: 11B37232DF: reject: RCPT from unknown[193.32.160.151]: 550 5.1.1 : Recipient address rejected: User unknown in local recipient table; from=<11dzpobp9fiiq@uspdetal.ru> to= proto=ESMTP helo=<[193.32.160.151]>
...

Nov 14 05:58:53 relay postfix/smtpd\[22022\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.150\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 05:58:53 relay postfix/smtpd\[22022\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.150\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 05:58:53 relay postfix/smtpd\[22022\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.150\]: 554 5.7.1 \: Relay access denied\; from=\ to=\ proto=ESMTP helo=\<\[193.32.160.151\]\>
Nov 14 05:58:53 relay postfix/smtpd\[22022\]: NOQUEUE: reject: RCPT from unknown\[193.32.160.150\]: 554 5.7.1 \: Relay access denied\
...

2019-11-14T00:03:29.218285mail01 postfix/smtpd[8416]: NOQUEUE: reject: RCPT from unknown[193.32.160.155]: 550

Invalid user tester from 221.13.203.102 port 3530

Aug 25 16:51:36 inter-technics sshd[14661]: Invalid user comm from 186.84.172.25 port 33494
Aug 25 16:51:36 inter-technics sshd[14661]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=186.84.172.25
Aug 25 16:51:36 inter-technics sshd[14661]: Invalid user comm from 186.84.172.25 port 33494
Aug 25 16:51:39 inter-technics sshd[14661]: Failed password for invalid user comm from 186.84.172.25 port 33494 ssh2
Aug 25 16:56:23 inter-technics sshd[15174]: Invalid user yj from 186.84.172.25 port 42454
...

Invalid user lobby from 106.12.176.53 port 56564

Brute-Force reported by Fail2Ban

$f2bV_matches

Invalid user nagesh from 187.163.83.134 port 57520

Invalid user teamspeak from 212.51.148.162 port 56720

Invalid user vmadmin from 51.210.182.187 port 35442

Invalid user dominique from 193.77.155.50 port 24624

Invalid user martin from 91.121.134.201 port 57290

SSH invalid-user multiple login try

Aug 25 15:30:16 Ubuntu-1404-trusty-64-minimal sshd\[8289\]: Invalid user myftp from 111.229.79.169
Aug 25 15:30:17 Ubuntu-1404-trusty-64-minimal sshd\[8289\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.229.79.169
Aug 25 15:30:19 Ubuntu-1404-trusty-64-minimal sshd\[8289\]: Failed password for invalid user myftp from 111.229.79.169 port 39246 ssh2
Aug 25 15:42:29 Ubuntu-1404-trusty-64-minimal sshd\[16535\]: Invalid user ftp from 111.229.79.169
Aug 25 15:42:29 Ubuntu-1404-trusty-64-minimal sshd\[16535\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=111.229.79.169

Aug 25 12:27:43 localhost sshd\[16968\]: Invalid user europe from 138.68.82.194 port 55438
Aug 25 12:27:43 localhost sshd\[16968\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.68.82.194
Aug 25 12:27:45 localhost sshd\[16968\]: Failed password for invalid user europe from 138.68.82.194 port 55438 ssh2
...

Invalid user deploy from 106.12.18.168 port 41126

Aug 25 20:39:27 itv-usvr-01 sshd[25343]: Invalid user discourse from 49.235.169.15
Aug 25 20:39:27 itv-usvr-01 sshd[25343]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.235.169.15
Aug 25 20:39:27 itv-usvr-01 sshd[25343]: Invalid user discourse from 49.235.169.15
Aug 25 20:39:30 itv-usvr-01 sshd[25343]: Failed password for invalid user discourse from 49.235.169.15 port 55056 ssh2
Aug 25 20:45:38 itv-usvr-01 sshd[25567]: Invalid user fxq from 49.235.169.15