SASL PLAIN auth failed: ruser=...

Aug 16 05:12:04 mail.srvfarm.net postfix/smtpd[1888509]: warning: unknown[189.91.3.98]: SASL PLAIN authentication failed: 
Aug 16 05:12:05 mail.srvfarm.net postfix/smtpd[1888509]: lost connection after AUTH from unknown[189.91.3.98]
Aug 16 05:12:27 mail.srvfarm.net postfix/smtpd[1875198]: warning: unknown[189.91.3.98]: SASL PLAIN authentication failed: 
Aug 16 05:12:28 mail.srvfarm.net postfix/smtpd[1875198]: lost connection after AUTH from unknown[189.91.3.98]
Aug 16 05:15:19 mail.srvfarm.net postfix/smtps/smtpd[1890604]: warning: unknown[189.91.3.98]: SASL PLAIN authentication failed:

Aug 16 05:16:41 mail.srvfarm.net postfix/smtpd[1888509]: warning: unknown[189.91.3.137]: SASL PLAIN authentication failed: 
Aug 16 05:16:42 mail.srvfarm.net postfix/smtpd[1888509]: lost connection after AUTH from unknown[189.91.3.137]
Aug 16 05:17:52 mail.srvfarm.net postfix/smtps/smtpd[1890437]: warning: unknown[189.91.3.137]: SASL PLAIN authentication failed: 
Aug 16 05:17:52 mail.srvfarm.net postfix/smtps/smtpd[1890437]: lost connection after AUTH from unknown[189.91.3.137]
Aug 16 05:22:31 mail.srvfarm.net postfix/smtpd[1875198]: warning: unknown[189.91.3.137]: SASL PLAIN authentication failed:

Aug 10 16:33:27 mail.srvfarm.net postfix/smtps/smtpd[1720774]: warning: unknown[189.91.3.16]: SASL PLAIN authentication failed: 
Aug 10 16:33:28 mail.srvfarm.net postfix/smtps/smtpd[1720774]: lost connection after AUTH from unknown[189.91.3.16]
Aug 10 16:35:18 mail.srvfarm.net postfix/smtpd[1721698]: warning: unknown[189.91.3.16]: SASL PLAIN authentication failed: 
Aug 10 16:35:19 mail.srvfarm.net postfix/smtpd[1721698]: lost connection after AUTH from unknown[189.91.3.16]
Aug 10 16:38:34 mail.srvfarm.net postfix/smtps/smtpd[1718300]: warning: unknown[189.91.3.16]: SASL PLAIN authentication failed:

Jul 24 11:04:05 mail.srvfarm.net postfix/smtpd[2185298]: warning: unknown[189.91.3.6]: SASL PLAIN authentication failed: 
Jul 24 11:04:05 mail.srvfarm.net postfix/smtpd[2185298]: lost connection after AUTH from unknown[189.91.3.6]
Jul 24 11:04:31 mail.srvfarm.net postfix/smtps/smtpd[2191183]: warning: unknown[189.91.3.6]: SASL PLAIN authentication failed: 
Jul 24 11:04:31 mail.srvfarm.net postfix/smtps/smtpd[2191183]: lost connection after AUTH from unknown[189.91.3.6]
Jul 24 11:05:01 mail.srvfarm.net postfix/smtps/smtpd[2188750]: warning: unknown[189.91.3.6]: SASL PLAIN authentication failed:

(smtpauth) Failed SMTP AUTH login from 189.91.3.30 (BR/Brazil/189-91-3-30.dvl-wr.mastercabo.com.br): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-07-15 17:31:54 plain authenticator failed for ([189.91.3.30]) [189.91.3.30]: 535 Incorrect authentication data (set_id=conference@iwnt.com)

Jun 18 13:36:21 mail.srvfarm.net postfix/smtps/smtpd[1467859]: warning: unknown[189.91.3.0]: SASL PLAIN authentication failed: 
Jun 18 13:36:22 mail.srvfarm.net postfix/smtps/smtpd[1467859]: lost connection after AUTH from unknown[189.91.3.0]
Jun 18 13:37:01 mail.srvfarm.net postfix/smtpd[1469103]: warning: unknown[189.91.3.0]: SASL PLAIN authentication failed: 
Jun 18 13:37:01 mail.srvfarm.net postfix/smtpd[1469103]: lost connection after AUTH from unknown[189.91.3.0]
Jun 18 13:42:44 mail.srvfarm.net postfix/smtpd[1469102]: warning: unknown[189.91.3.0]: SASL PLAIN authentication failed:

Jun 13 22:51:41 mail.srvfarm.net postfix/smtps/smtpd[1294951]: warning: unknown[189.91.3.146]: SASL PLAIN authentication failed: 
Jun 13 22:51:41 mail.srvfarm.net postfix/smtps/smtpd[1294951]: lost connection after AUTH from unknown[189.91.3.146]
Jun 13 22:56:37 mail.srvfarm.net postfix/smtpd[1295677]: warning: unknown[189.91.3.146]: SASL PLAIN authentication failed: 
Jun 13 22:56:37 mail.srvfarm.net postfix/smtpd[1295677]: lost connection after AUTH from unknown[189.91.3.146]
Jun 13 22:58:52 mail.srvfarm.net postfix/smtpd[1296188]: warning: unknown[189.91.3.146]: SASL PLAIN authentication failed:

2020-06-07 21:53:38 SMTP:25 IP autobanned - 2 attempts  a day

Jun  5 17:11:08 mail.srvfarm.net postfix/smtps/smtpd[3149856]: warning: unknown[189.91.3.46]: SASL PLAIN authentication failed: 
Jun  5 17:11:09 mail.srvfarm.net postfix/smtps/smtpd[3149856]: lost connection after AUTH from unknown[189.91.3.46]
Jun  5 17:14:27 mail.srvfarm.net postfix/smtps/smtpd[3149856]: warning: unknown[189.91.3.46]: SASL PLAIN authentication failed: 
Jun  5 17:14:27 mail.srvfarm.net postfix/smtps/smtpd[3149856]: lost connection after AUTH from unknown[189.91.3.46]
Jun  5 17:18:29 mail.srvfarm.net postfix/smtps/smtpd[3149849]: warning: unknown[189.91.3.46]: SASL PLAIN authentication failed:

Sep 12 10:51:34 web1 postfix/smtpd[11434]: warning: unknown[189.91.3.42]: SASL PLAIN authentication failed: authentication failure
...

Sep  6 19:33:28 mailman postfix/smtpd[25386]: warning: unknown[189.91.3.83]: SASL PLAIN authentication failed: authentication failure

IP: 189.91.3.121
ASN: AS28202 Rede Brasileira de Comunicacao Ltda
Port: Message Submission 587
Found in one or more Blacklists
Date: 3/09/2019 8:07:28 AM UTC

failed_logins

failed_logins

Excessive failed login attempts on port 587

Dec 19 15:38:18 vpn01 sshd[21851]: Failed password for root from 192.42.116.16 port 59410 ssh2
Dec 19 15:38:31 vpn01 sshd[21851]: error: maximum authentication attempts exceeded for root from 192.42.116.16 port 59410 ssh2 [preauth]
...

Dec 19 16:40:09 grey postfix/smtpd\[24642\]: NOQUEUE: reject: RCPT from unknown\[91.232.96.30\]: 554 5.7.1 Service unavailable\; Client host \[91.232.96.30\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[91.232.96.30\]\; from=\ to=\ proto=ESMTP helo=\
...

12/19/2019-17:08:02.526373 52.36.131.219 Protocol: 6 SURICATA TLS invalid record/traffic

2019-12-19T15:53:16.068723shield sshd\[25658\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.217  user=root
2019-12-19T15:53:17.595252shield sshd\[25658\]: Failed password for root from 222.186.175.217 port 10584 ssh2
2019-12-19T15:53:21.238438shield sshd\[25658\]: Failed password for root from 222.186.175.217 port 10584 ssh2
2019-12-19T15:53:24.817433shield sshd\[25658\]: Failed password for root from 222.186.175.217 port 10584 ssh2
2019-12-19T15:53:28.736522shield sshd\[25658\]: Failed password for root from 222.186.175.217 port 10584 ssh2

Dec 19 16:10:52 localhost sshd\[36327\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=186.71.57.18  user=sync
Dec 19 16:10:53 localhost sshd\[36327\]: Failed password for sync from 186.71.57.18 port 52848 ssh2
Dec 19 16:16:51 localhost sshd\[36451\]: Invalid user rp from 186.71.57.18 port 58930
Dec 19 16:16:51 localhost sshd\[36451\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=186.71.57.18
Dec 19 16:16:53 localhost sshd\[36451\]: Failed password for invalid user rp from 186.71.57.18 port 58930 ssh2
...

Dec 19 17:09:46 dcd-gentoo sshd[30790]: User root from 222.186.175.150 not allowed because none of user's groups are listed in AllowGroups
Dec 19 17:09:49 dcd-gentoo sshd[30790]: error: PAM: Authentication failure for illegal user root from 222.186.175.150
Dec 19 17:09:46 dcd-gentoo sshd[30790]: User root from 222.186.175.150 not allowed because none of user's groups are listed in AllowGroups
Dec 19 17:09:49 dcd-gentoo sshd[30790]: error: PAM: Authentication failure for illegal user root from 222.186.175.150
Dec 19 17:09:46 dcd-gentoo sshd[30790]: User root from 222.186.175.150 not allowed because none of user's groups are listed in AllowGroups
Dec 19 17:09:49 dcd-gentoo sshd[30790]: error: PAM: Authentication failure for illegal user root from 222.186.175.150
Dec 19 17:09:49 dcd-gentoo sshd[30790]: Failed keyboard-interactive/pam for invalid user root from 222.186.175.150 port 29788 ssh2
...

Dec 19 16:39:55 grey postfix/smtpd\[5614\]: NOQUEUE: reject: RCPT from public-gprs359144.centertel.pl\[37.47.34.41\]: 554 5.7.1 Service unavailable\; Client host \[37.47.34.41\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[37.47.34.41\]\; from=\ to=\ proto=ESMTP helo=\
...

Dec 19 17:15:02 minden010 sshd[15732]: Failed password for root from 77.81.229.207 port 33486 ssh2
Dec 19 17:20:11 minden010 sshd[17431]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=77.81.229.207
Dec 19 17:20:12 minden010 sshd[17431]: Failed password for invalid user znc from 77.81.229.207 port 40884 ssh2
...

Dec 19 20:46:05 gw1 sshd[26517]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.156.53.17
Dec 19 20:46:07 gw1 sshd[26517]: Failed password for invalid user sun from 49.156.53.17 port 21875 ssh2
...

leo_www

Dec 19 17:00:25 sd-53420 sshd\[5298\]: Invalid user nobodynobody from 40.70.65.93
Dec 19 17:00:25 sd-53420 sshd\[5298\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=40.70.65.93
Dec 19 17:00:27 sd-53420 sshd\[5298\]: Failed password for invalid user nobodynobody from 40.70.65.93 port 33228 ssh2
Dec 19 17:06:01 sd-53420 sshd\[7322\]: Invalid user kornblau from 40.70.65.93
Dec 19 17:06:01 sd-53420 sshd\[7322\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=40.70.65.93
...

Dec 19 15:38:19 grey postfix/smtpd\[12011\]: NOQUEUE: reject: RCPT from unknown\[91.83.113.173\]: 554 5.7.1 Service unavailable\; Client host \[91.83.113.173\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[91.83.113.173\]\; from=\ to=\ proto=ESMTP helo=\<\[91.83.113.173\]\>
...

2019-12-19T17:01:12.328763centos sshd\[4329\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.92.0.172  user=root
2019-12-19T17:01:14.201743centos sshd\[4329\]: Failed password for root from 218.92.0.172 port 17229 ssh2
2019-12-19T17:01:17.147870centos sshd\[4329\]: Failed password for root from 218.92.0.172 port 17229 ssh2

Dec 19 09:49:44 linuxvps sshd\[27273\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.28.228.84  user=root
Dec 19 09:49:46 linuxvps sshd\[27273\]: Failed password for root from 159.28.228.84 port 56426 ssh2
Dec 19 09:53:38 linuxvps sshd\[29790\]: Invalid user franki from 159.28.228.84
Dec 19 09:53:38 linuxvps sshd\[29790\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.28.228.84
Dec 19 09:53:39 linuxvps sshd\[29790\]: Failed password for invalid user franki from 159.28.228.84 port 38684 ssh2

Dec 19 16:44:41 ns3042688 sshd\[6046\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.220  user=root
Dec 19 16:44:44 ns3042688 sshd\[6046\]: Failed password for root from 222.186.175.220 port 61356 ssh2
Dec 19 16:44:46 ns3042688 sshd\[6046\]: Failed password for root from 222.186.175.220 port 61356 ssh2
Dec 19 16:44:50 ns3042688 sshd\[6046\]: Failed password for root from 222.186.175.220 port 61356 ssh2
Dec 19 16:45:01 ns3042688 sshd\[6202\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.220  user=root
...