May 13 17:18:01 relay postfix/smtpd\[14039\]: warning: unknown\[185.143.75.81\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 13 17:18:12 relay postfix/smtpd\[2194\]: warning: unknown\[185.143.75.81\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 13 17:18:41 relay postfix/smtpd\[6762\]: warning: unknown\[185.143.75.81\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 13 17:18:51 relay postfix/smtpd\[10130\]: warning: unknown\[185.143.75.81\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 13 17:19:20 relay postfix/smtpd\[6762\]: warning: unknown\[185.143.75.81\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...

SSH auth scanning - multiple failed logins

May 13 14:45:47 vserver sshd\[20293\]: Invalid user zxcloudsetup from 188.166.251.87May 13 14:45:49 vserver sshd\[20293\]: Failed password for invalid user zxcloudsetup from 188.166.251.87 port 55344 ssh2May 13 14:49:52 vserver sshd\[20331\]: Invalid user nagyg from 188.166.251.87May 13 14:49:54 vserver sshd\[20331\]: Failed password for invalid user nagyg from 188.166.251.87 port 58361 ssh2
...

SASL broute force

May 13 14:26:48 h2646465 sshd[15109]: Invalid user ubuntu from 191.7.145.246
May 13 14:26:48 h2646465 sshd[15109]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=191.7.145.246
May 13 14:26:48 h2646465 sshd[15109]: Invalid user ubuntu from 191.7.145.246
May 13 14:26:49 h2646465 sshd[15109]: Failed password for invalid user ubuntu from 191.7.145.246 port 35480 ssh2
May 13 14:32:33 h2646465 sshd[15834]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=191.7.145.246  user=backup
May 13 14:32:35 h2646465 sshd[15834]: Failed password for backup from 191.7.145.246 port 53500 ssh2
May 13 14:37:12 h2646465 sshd[16501]: Invalid user tongtao from 191.7.145.246
May 13 14:37:12 h2646465 sshd[16501]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=191.7.145.246
May 13 14:37:12 h2646465 sshd[16501]: Invalid user tongtao from 191.7.145.246
May 13 14:37:15 h2646465 sshd[16501]: Failed password for invalid us

May 13 14:34:19 ns382633 sshd\[13027\]: Invalid user test from 200.88.52.122 port 33732
May 13 14:34:19 ns382633 sshd\[13027\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=200.88.52.122
May 13 14:34:21 ns382633 sshd\[13027\]: Failed password for invalid user test from 200.88.52.122 port 33732 ssh2
May 13 14:37:02 ns382633 sshd\[13781\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=200.88.52.122  user=root
May 13 14:37:04 ns382633 sshd\[13781\]: Failed password for root from 200.88.52.122 port 34392 ssh2

May 13 16:16:58 pkdns2 sshd\[20260\]: Invalid user temp from 150.242.97.111May 13 16:16:59 pkdns2 sshd\[20260\]: Failed password for invalid user temp from 150.242.97.111 port 40154 ssh2May 13 16:19:53 pkdns2 sshd\[20374\]: Invalid user admin from 150.242.97.111May 13 16:19:55 pkdns2 sshd\[20374\]: Failed password for invalid user admin from 150.242.97.111 port 48522 ssh2May 13 16:23:00 pkdns2 sshd\[20556\]: Invalid user test1234 from 150.242.97.111May 13 16:23:02 pkdns2 sshd\[20556\]: Failed password for invalid user test1234 from 150.242.97.111 port 56996 ssh2
...

Same person From U.S.A. asking for illegal transfert of money from a Burkina Faso bank no interest in such scam mail blocked deleted and retrun to the sender

$f2bV_matches

2020-05-13 14:36:51,162 fail2ban.actions: WARNING [ssh] Ban 157.230.249.90

2020-05-13T15:13:40.067862shield sshd\[21968\]: Invalid user git from 183.82.145.214 port 50526
2020-05-13T15:13:40.075538shield sshd\[21968\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.82.145.214
2020-05-13T15:13:41.840875shield sshd\[21968\]: Failed password for invalid user git from 183.82.145.214 port 50526 ssh2
2020-05-13T15:17:51.247924shield sshd\[23032\]: Invalid user user1 from 183.82.145.214 port 57002
2020-05-13T15:17:51.255330shield sshd\[23032\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.82.145.214

May 13 08:36:36 Host-KEWR-E sshd[31778]: Invalid user oy from 193.112.100.92 port 41720
...

May 13 11:03:31 NPSTNNYC01T sshd[10353]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.75.246.176
May 13 11:03:33 NPSTNNYC01T sshd[10353]: Failed password for invalid user admin from 51.75.246.176 port 49708 ssh2
May 13 11:07:09 NPSTNNYC01T sshd[10724]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.75.246.176
...

May 13 15:37:31 minden010 sshd[420]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.33.116
May 13 15:37:33 minden010 sshd[420]: Failed password for invalid user teampspeak from 128.199.33.116 port 35358 ssh2
May 13 15:42:14 minden010 sshd[2314]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.33.116
...

\[May 14 01:01:44\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed for '185.147.215.13:56476' - Wrong password
\[May 14 01:02:19\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed for '185.147.215.13:58698' - Wrong password
\[May 14 01:02:48\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed for '185.147.215.13:55488' - Wrong password
\[May 14 01:03:15\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed for '185.147.215.13:50964' - Wrong password
\[May 14 01:03:43\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed for '185.147.215.13:63236' - Wrong password
\[May 14 01:04:10\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed for '185.147.215.13:58293' - Wrong password
\[May 14 01:04:38\] NOTICE\[2019\] chan_sip.c: Registration from '\' failed
...