Jan 10 05:55:00 jane sshd[30194]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=171.96.90.70 
Jan 10 05:55:02 jane sshd[30194]: Failed password for invalid user test from 171.96.90.70 port 50424 ssh2
...

Jan 10 05:55:06 grey postfix/smtpd\[18403\]: NOQUEUE: reject: RCPT from unknown\[14.236.123.48\]: 554 5.7.1 Service unavailable\; Client host \[14.236.123.48\] blocked using cbl.abuseat.org\; Blocked - see http://www.abuseat.org/lookup.cgi\?ip=14.236.123.48\; from=\ to=\ proto=ESMTP helo=\
...

Attempt to attack host OS, exploiting network vulnerabilities, on 10-01-2020 04:55:08.

Jan 10 08:10:56 amit sshd\[25388\]: Invalid user @dmin-tgr2 from 50.237.139.58
Jan 10 08:10:56 amit sshd\[25388\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=50.237.139.58
Jan 10 08:10:59 amit sshd\[25388\]: Failed password for invalid user @dmin-tgr2 from 50.237.139.58 port 41992 ssh2
...

Jan 10 07:16:53 legacy sshd[27216]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.3.226.230
Jan 10 07:16:55 legacy sshd[27216]: Failed password for invalid user nw from 103.3.226.230 port 48336 ssh2
Jan 10 07:21:10 legacy sshd[27326]: Failed password for root from 103.3.226.230 port 51256 ssh2
...

WordPress login Brute force / Web App Attack on client site.

2020-01-09 22:54:29 dovecot_login authenticator failed for (lcdbj) [117.69.154.246]:60571 I=[192.147.25.65]:25: 535 Incorrect authentication data (set_id=wangjianhua@lerctr.org)
2020-01-09 22:54:36 dovecot_login authenticator failed for (bkvmo) [117.69.154.246]:60571 I=[192.147.25.65]:25: 535 Incorrect authentication data (set_id=wangjianhua@lerctr.org)
2020-01-09 22:54:49 dovecot_login authenticator failed for (hlyni) [117.69.154.246]:60571 I=[192.147.25.65]:25: 535 Incorrect authentication data (set_id=wangjianhua@lerctr.org)
...

Unauthorized connection attempt detected from IP address 222.186.180.142 to port 22 [T]

Automatic report - Port Scan Attack

01/10/2020-07:58:48.265235 193.31.24.113 Protocol: 6 ET CHAT IRC PONG response

Jan 10 06:45:46 blackbee postfix/smtpd\[19801\]: warning: unknown\[46.38.144.146\]: SASL LOGIN authentication failed: authentication failure
Jan 10 06:46:10 blackbee postfix/smtpd\[19803\]: warning: unknown\[46.38.144.146\]: SASL LOGIN authentication failed: authentication failure
Jan 10 06:47:03 blackbee postfix/smtpd\[19804\]: warning: unknown\[46.38.144.146\]: SASL LOGIN authentication failed: authentication failure
Jan 10 06:47:24 blackbee postfix/smtpd\[19803\]: warning: unknown\[46.38.144.146\]: SASL LOGIN authentication failed: authentication failure
Jan 10 06:48:21 blackbee postfix/smtpd\[19804\]: warning: unknown\[46.38.144.146\]: SASL LOGIN authentication failed: authentication failure
...

Fri Jan 10 06:56:22 2020 \[pid 5005\] \[lexgold\] FTP response: Client "117.22.68.64", "530 Permission denied."
Fri Jan 10 06:56:25 2020 \[pid 5009\] \[lexgold\] FTP response: Client "117.22.68.64", "530 Permission denied."
Fri Jan 10 06:56:27 2020 \[pid 5015\] \[lexgold\] FTP response: Client "117.22.68.64", "530 Permission denied."

Jan 10 04:03:19 firewall sshd[23151]: Invalid user joop from 49.233.183.155
Jan 10 04:03:22 firewall sshd[23151]: Failed password for invalid user joop from 49.233.183.155 port 41390 ssh2
Jan 10 04:06:33 firewall sshd[23225]: Invalid user ansibleuser from 49.233.183.155
...

Unauthorized connection attempt detected from IP address 110.137.178.29 to port 22

Jan 10 05:54:25  exim[24310]: [1\45] 1ipmJT-0006K6-MP H=(103-42-216-202.fmgmyanmar.com) [103.42.216.202] F= rejected after DATA: This message scored 12.2 spam points.