2020-03-06T22:35:49.196504shield sshd\[24623\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.89.115.126  user=root
2020-03-06T22:35:50.627053shield sshd\[24623\]: Failed password for root from 159.89.115.126 port 36394 ssh2
2020-03-06T22:42:31.113114shield sshd\[26034\]: Invalid user appserver from 159.89.115.126 port 52020
2020-03-06T22:42:31.117369shield sshd\[26034\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.89.115.126
2020-03-06T22:42:33.069726shield sshd\[26034\]: Failed password for invalid user appserver from 159.89.115.126 port 52020 ssh2

Mar  6 14:05:35 mockhub sshd[27977]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.235.250.69
Mar  6 14:05:37 mockhub sshd[27977]: Failed password for invalid user mailserver from 49.235.250.69 port 52834 ssh2
...

Mar  6 23:05:06 vps691689 sshd[3058]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=92.63.194.107
Mar  6 23:05:09 vps691689 sshd[3058]: Failed password for invalid user admin from 92.63.194.107 port 44551 ssh2
Mar  6 23:05:23 vps691689 sshd[3099]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=92.63.194.107
...

Mar  6 23:06:14 mail.srvfarm.net postfix/smtpd[2297865]: NOQUEUE: reject: RCPT from unknown[134.73.51.243]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar  6 23:07:20 mail.srvfarm.net postfix/smtpd[2311375]: NOQUEUE: reject: RCPT from unknown[134.73.51.243]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar  6 23:07:20 mail.srvfarm.net postfix/smtpd[2311372]: NOQUEUE: reject: RCPT from unknown[134.73.51.243]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar  6 23:07:20 mail.srvfarm.net postfix/smtpd[2311374]: NOQUEUE: reject: RCPT from unknown[134.73.51.243]:

2020-03-06 23:36:38 dovecot_login authenticator failed for \(User\) \[45.125.65.35\]: 535 Incorrect authentication data \(set_id=bookings@no-server.de\)
2020-03-06 23:37:48 dovecot_login authenticator failed for \(User\) \[45.125.65.35\]: 535 Incorrect authentication data \(set_id=coconut\)
2020-03-06 23:40:53 dovecot_login authenticator failed for \(User\) \[45.125.65.35\]: 535 Incorrect authentication data \(set_id=restaurant@no-server.de\)
2020-03-06 23:41:51 dovecot_login authenticator failed for \(User\) \[45.125.65.35\]: 535 Incorrect authentication data \(set_id=restaurant@no-server.de\)
2020-03-06 23:41:56 dovecot_login authenticator failed for \(User\) \[45.125.65.35\]: 535 Incorrect authentication data \(set_id=restaurant@no-server.de\)
2020-03-06 23:41:56 dovecot_login authenticator failed for \(User\) \[45.125.65.35\]: 535 Incorrect authentication data \(set_id=restaurant@no-server.de\)
...

2020-03-06 23:50:32 dovecot_plain authenticator failed for \(\[78.128.113.67\]\) \[78.128.113.67\]: 535 Incorrect authentication data \(set_id=harald.schueller@jugend-ohne-grenzen.net\)
2020-03-06 23:50:39 dovecot_plain authenticator failed for \(\[78.128.113.67\]\) \[78.128.113.67\]: 535 Incorrect authentication data \(set_id=harald.schueller\)
2020-03-06 23:51:36 dovecot_plain authenticator failed for \(\[78.128.113.67\]\) \[78.128.113.67\]: 535 Incorrect authentication data \(set_id=harald.schueller@jugend-ohne-grenzen.net\)
2020-03-06 23:51:43 dovecot_plain authenticator failed for \(\[78.128.113.67\]\) \[78.128.113.67\]: 535 Incorrect authentication data \(set_id=harald.schueller\)
2020-03-06 23:58:42 dovecot_plain authenticator failed for \(\[78.128.113.67\]\) \[78.128.113.67\]: 535 Incorrect authentication data \(set_id=harald.schueller@jugend-ohne-grenzen.net\)
...

1583532363 - 03/06/2020 23:06:03 Host: 202.62.224.26/202.62.224.26 Port: 445 TCP Blocked

" "

Mar  6 23:05:33  sshd\[5378\]: User root from 181.48.134.65 not allowed because not listed in AllowUsersMar  6 23:05:35  sshd\[5378\]: Failed password for invalid user root from 181.48.134.65 port 41978 ssh2
...

" "

Mar  6 23:41:35 vps691689 sshd[4371]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=69.229.6.54
Mar  6 23:41:37 vps691689 sshd[4371]: Failed password for invalid user uno85 from 69.229.6.54 port 51488 ssh2
Mar  6 23:47:38 vps691689 sshd[4558]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=69.229.6.54
...

Mar  6 22:52:59 server sshd[1943081]: Failed password for root from 106.13.184.99 port 39560 ssh2
Mar  6 23:01:14 server sshd[1957161]: Failed password for root from 106.13.184.99 port 44718 ssh2
Mar  6 23:05:45 server sshd[1964404]: Failed password for root from 106.13.184.99 port 45204 ssh2

Mar  6 23:06:00 grey postfix/smtpd\[18312\]: NOQUEUE: reject: RCPT from unknown\[42.231.163.223\]: 554 5.7.1 Service unavailable\; Client host \[42.231.163.223\] blocked using bl.spamcop.net\; Blocked - see https://www.spamcop.net/bl.shtml\?42.231.163.223\; from=\ to=\ proto=SMTP helo=\
...

Mar  6 22:55:02 web01.agentur-b-2.de postfix/submission/smtpd[735355]: warning: p200300DC671FC562A9610E4C2CEDCEE6.dip0.t-ipconnect.de[2003:dc:671f:c562:a961:e4c:2ced:cee6]: SASL PLAIN authentication failed: 
Mar  6 22:55:08 web01.agentur-b-2.de postfix/submission/smtpd[735355]: warning: p200300DC671FC562A9610E4C2CEDCEE6.dip0.t-ipconnect.de[2003:dc:671f:c562:a961:e4c:2ced:cee6]: SASL PLAIN authentication failed: 
Mar  6 22:55:15 web01.agentur-b-2.de postfix/submission/smtpd[735355]: warning: p200300DC671FC562A9610E4C2CEDCEE6.dip0.t-ipconnect.de[2003:dc:671f:c562:a961:e4c:2ced:cee6]: SASL LOGIN authentication failed: UGFzc3dvcmQ6

fail2ban