Dec 22 06:29:53 hermescis postfix/smtpd[7639]: NOQUEUE: reject: RCPT from adsl-223.109.242.13.tellas.gr[109.242.13.223]: 550 5.1.1 : Recipient address rejected:* from= to= proto=ESMTP helo=

Unauthorized connection attempt from IP address 171.232.44.123 on Port 445(SMB)

Dec 22 06:52:07 localhost sshd\[17967\]: Invalid user saroj from 180.76.53.114 port 54210
Dec 22 06:52:07 localhost sshd\[17967\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.53.114
Dec 22 06:52:09 localhost sshd\[17967\]: Failed password for invalid user saroj from 180.76.53.114 port 54210 ssh2
Dec 22 06:58:31 localhost sshd\[18094\]: Invalid user 1qaz2ws from 180.76.53.114 port 46092
Dec 22 06:58:31 localhost sshd\[18094\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.53.114
...

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

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Dec 22 08:11:39 * sshd[25384]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=83.97.24.10
Dec 22 08:11:41 * sshd[25384]: Failed password for invalid user guest from 83.97.24.10 port 47596 ssh2

Dec 22 01:29:57 plusreed sshd[2319]: Invalid user geniuz from 189.79.100.98
...

Dec 22 07:24:27 vps647732 sshd[28332]: Failed password for root from 130.162.66.249 port 35014 ssh2
...

Unauthorised access (Dec 22) SRC=89.218.78.226 LEN=52 TTL=114 ID=2201 DF TCP DPT=445 WINDOW=8192 SYN

$f2bV_matches

12/22/2019-08:14:17.929012 35.160.48.160 Protocol: 6 SURICATA TLS invalid record/traffic

Dec 22 11:54:45 vibhu-HP-Z238-Microtower-Workstation sshd\[16378\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=77.81.230.120  user=mysql
Dec 22 11:54:47 vibhu-HP-Z238-Microtower-Workstation sshd\[16378\]: Failed password for mysql from 77.81.230.120 port 48678 ssh2
Dec 22 11:59:58 vibhu-HP-Z238-Microtower-Workstation sshd\[16717\]: Invalid user woehl from 77.81.230.120
Dec 22 11:59:58 vibhu-HP-Z238-Microtower-Workstation sshd\[16717\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=77.81.230.120
Dec 22 12:00:00 vibhu-HP-Z238-Microtower-Workstation sshd\[16717\]: Failed password for invalid user woehl from 77.81.230.120 port 54322 ssh2
...

Dec 22 07:29:53  exim[15746]: [1\49] 1iiukS-00045y-2J H=lot.shrewdmhealth.com (lot.varzide.co) [81.28.100.140] F= rejected after DATA: This message scored 102.1 spam points.

$f2bV_matches

Dec 22 07:41:20 OPSO sshd\[21775\]: Invalid user taydra from 118.27.15.68 port 60898
Dec 22 07:41:20 OPSO sshd\[21775\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.27.15.68
Dec 22 07:41:23 OPSO sshd\[21775\]: Failed password for invalid user taydra from 118.27.15.68 port 60898 ssh2
Dec 22 07:47:06 OPSO sshd\[22905\]: Invalid user network2 from 118.27.15.68 port 40360
Dec 22 07:47:06 OPSO sshd\[22905\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.27.15.68