Triggered by Fail2Ban at Ares web server

May 24 19:48:40 pornomens sshd\[21141\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.89.115.74  user=root
May 24 19:48:42 pornomens sshd\[21141\]: Failed password for root from 159.89.115.74 port 35974 ssh2
May 24 19:57:44 pornomens sshd\[21312\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.89.115.74  user=root
...

May 24 21:14:09 pve1 sshd[32701]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=117.50.13.29 
May 24 21:14:12 pve1 sshd[32701]: Failed password for invalid user server from 117.50.13.29 port 55948 ssh2
...

"Unauthorized connection attempt on SSHD detected"

2020-05-24T12:06:12.498078shield sshd\[17504\]: Invalid user rbn from 94.191.119.176 port 34031
2020-05-24T12:06:12.502216shield sshd\[17504\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.191.119.176
2020-05-24T12:06:14.475809shield sshd\[17504\]: Failed password for invalid user rbn from 94.191.119.176 port 34031 ssh2
2020-05-24T12:08:10.391570shield sshd\[17834\]: Invalid user flp from 94.191.119.176 port 45175
2020-05-24T12:08:10.395272shield sshd\[17834\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=94.191.119.176

Invalid user skinny from 175.207.13.22 port 59654

[Sun May 24 13:39:34 2020] - Syn Flood From IP: 51.195.164.81 Port: 59047

From: "Survival Tools" 
Unsolicited bulk spam - (EHLO mailspamprotection.com) (212.237.17.126) Aruba S.p.a. – repeat IP
Header mailspamprotection.com = 35.223.122.181 Google
Spam link softengins.com = repeat IP 212.237.13.213 Aruba S.p.a. – phishing redirect:
a)	www.orbity3.com = 34.107.192.170 Google
b)	gatoptrax.com = 3.212.128.84, 52.7.49.177, 54.236.164.154 Amazon
c)	www.am892trk.com = 34.107.146.178 Google
d)	eaglex700.superdigideal.com = 206.189.173.239 DigitalOcean
Spam link i.imgur.com = 151.101.120.193 Fastly
Sender domain softengins.com = 212.237.13.213 Aruba S.p.a.

(smtpauth) Failed SMTP AUTH login from 188.214.104.146 (RO/Romania/api.squired.ro): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-05-24 18:15:45 plain authenticator failed for (fzl8af4ih2bwjkesvk6c6ts2jtsici9q) [188.214.104.146]: 535 Incorrect authentication data (set_id=fsh)

Spammer

Spam

May 24 21:34:29 ncomp sshd[24296]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=87.251.74.48  user=root
May 24 21:34:31 ncomp sshd[24296]: Failed password for root from 87.251.74.48 port 40712 ssh2
May 24 21:34:29 ncomp sshd[24295]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=87.251.74.48  user=root
May 24 21:34:31 ncomp sshd[24295]: Failed password for root from 87.251.74.48 port 40684 ssh2

May 24 21:59:37 our-server-hostname postfix/smtpd[22406]: connect from unknown[27.66.253.196]
May x@x
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........
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https://www.blocklist.de/en/view.html?ip=27.66.253.196

Email rejected due to spam filtering

2020-05-24T20:03:28.566277sd-86998 sshd[42490]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.7.233.185  user=root
2020-05-24T20:03:30.331316sd-86998 sshd[42490]: Failed password for root from 157.7.233.185 port 62165 ssh2
2020-05-24T20:07:49.450574sd-86998 sshd[43006]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.7.233.185  user=root
2020-05-24T20:07:51.376499sd-86998 sshd[43006]: Failed password for root from 157.7.233.185 port 64071 ssh2
2020-05-24T20:12:21.111184sd-86998 sshd[43594]: Invalid user lorraine from 157.7.233.185 port 60385
...