Jun 13 23:01:47 mail.srvfarm.net postfix/smtps/smtpd[1296614]: lost connection after CONNECT from unknown[103.25.134.184]
Jun 13 23:03:00 mail.srvfarm.net postfix/smtps/smtpd[1296618]: warning: unknown[103.25.134.184]: SASL PLAIN authentication failed: 
Jun 13 23:03:00 mail.srvfarm.net postfix/smtps/smtpd[1296618]: lost connection after AUTH from unknown[103.25.134.184]
Jun 13 23:05:54 mail.srvfarm.net postfix/smtps/smtpd[1295671]: warning: unknown[103.25.134.184]: SASL PLAIN authentication failed: 
Jun 13 23:05:54 mail.srvfarm.net postfix/smtps/smtpd[1295671]: lost connection after AUTH from unknown[103.25.134.184]

Sep 21 18:55:45 mail.srvfarm.net postfix/smtpd[2952347]: warning: unknown[103.25.134.167]: SASL PLAIN authentication failed: 
Sep 21 18:55:45 mail.srvfarm.net postfix/smtpd[2952347]: lost connection after AUTH from unknown[103.25.134.167]
Sep 21 18:58:26 mail.srvfarm.net postfix/smtps/smtpd[2951826]: warning: unknown[103.25.134.167]: SASL PLAIN authentication failed: 
Sep 21 18:58:27 mail.srvfarm.net postfix/smtps/smtpd[2951826]: lost connection after AUTH from unknown[103.25.134.167]
Sep 21 19:01:56 mail.srvfarm.net postfix/smtpd[2953238]: warning: unknown[103.25.134.167]: SASL PLAIN authentication failed:

Sep 21 18:55:45 mail.srvfarm.net postfix/smtpd[2952347]: warning: unknown[103.25.134.167]: SASL PLAIN authentication failed: 
Sep 21 18:55:45 mail.srvfarm.net postfix/smtpd[2952347]: lost connection after AUTH from unknown[103.25.134.167]
Sep 21 18:58:26 mail.srvfarm.net postfix/smtps/smtpd[2951826]: warning: unknown[103.25.134.167]: SASL PLAIN authentication failed: 
Sep 21 18:58:27 mail.srvfarm.net postfix/smtps/smtpd[2951826]: lost connection after AUTH from unknown[103.25.134.167]
Sep 21 19:01:56 mail.srvfarm.net postfix/smtpd[2953238]: warning: unknown[103.25.134.167]: SASL PLAIN authentication failed:

Aug 27 05:59:07 mail.srvfarm.net postfix/smtpd[1362762]: warning: unknown[103.25.134.139]: SASL PLAIN authentication failed: 
Aug 27 05:59:08 mail.srvfarm.net postfix/smtpd[1362762]: lost connection after AUTH from unknown[103.25.134.139]
Aug 27 06:02:05 mail.srvfarm.net postfix/smtpd[1379454]: warning: unknown[103.25.134.139]: SASL PLAIN authentication failed: 
Aug 27 06:02:06 mail.srvfarm.net postfix/smtpd[1379454]: lost connection after AUTH from unknown[103.25.134.139]
Aug 27 06:02:15 mail.srvfarm.net postfix/smtps/smtpd[1362633]: warning: unknown[103.25.134.139]: SASL PLAIN authentication failed:

Aug 16 05:00:26 mail.srvfarm.net postfix/smtpd[1872412]: warning: unknown[103.25.134.140]: SASL PLAIN authentication failed: 
Aug 16 05:00:26 mail.srvfarm.net postfix/smtpd[1872412]: lost connection after AUTH from unknown[103.25.134.140]
Aug 16 05:03:03 mail.srvfarm.net postfix/smtpd[1887487]: warning: unknown[103.25.134.140]: SASL PLAIN authentication failed: 
Aug 16 05:03:04 mail.srvfarm.net postfix/smtpd[1887487]: lost connection after AUTH from unknown[103.25.134.140]
Aug 16 05:09:52 mail.srvfarm.net postfix/smtps/smtpd[1887810]: warning: unknown[103.25.134.140]: SASL PLAIN authentication failed:

Aug 16 05:27:48 mail.srvfarm.net postfix/smtps/smtpd[1890600]: warning: unknown[103.25.134.222]: SASL PLAIN authentication failed: 
Aug 16 05:27:48 mail.srvfarm.net postfix/smtps/smtpd[1890600]: lost connection after AUTH from unknown[103.25.134.222]
Aug 16 05:29:39 mail.srvfarm.net postfix/smtps/smtpd[1888744]: warning: unknown[103.25.134.222]: SASL PLAIN authentication failed: 
Aug 16 05:29:40 mail.srvfarm.net postfix/smtps/smtpd[1888744]: lost connection after AUTH from unknown[103.25.134.222]
Aug 16 05:32:09 mail.srvfarm.net postfix/smtpd[1879275]: warning: unknown[103.25.134.222]: SASL PLAIN authentication failed:

Aug 16 05:33:23 mail.srvfarm.net postfix/smtpd[1888511]: warning: unknown[103.25.134.143]: SASL PLAIN authentication failed: 
Aug 16 05:33:23 mail.srvfarm.net postfix/smtpd[1888511]: lost connection after AUTH from unknown[103.25.134.143]
Aug 16 05:42:23 mail.srvfarm.net postfix/smtps/smtpd[1907644]: warning: unknown[103.25.134.143]: SASL PLAIN authentication failed: 
Aug 16 05:42:23 mail.srvfarm.net postfix/smtps/smtpd[1907644]: lost connection after AUTH from unknown[103.25.134.143]
Aug 16 05:43:06 mail.srvfarm.net postfix/smtps/smtpd[1890437]: warning: unknown[103.25.134.143]: SASL PLAIN authentication failed:

Aug 15 01:47:06 mail.srvfarm.net postfix/smtpd[947315]: warning: unknown[103.25.134.193]: SASL PLAIN authentication failed: 
Aug 15 01:47:06 mail.srvfarm.net postfix/smtpd[947315]: lost connection after AUTH from unknown[103.25.134.193]
Aug 15 01:47:15 mail.srvfarm.net postfix/smtps/smtpd[930972]: warning: unknown[103.25.134.193]: SASL PLAIN authentication failed: 
Aug 15 01:47:15 mail.srvfarm.net postfix/smtps/smtpd[930972]: lost connection after AUTH from unknown[103.25.134.193]
Aug 15 01:47:30 mail.srvfarm.net postfix/smtps/smtpd[944622]: lost connection after AUTH from unknown[103.25.134.193]

Aug  2 05:47:00 mail.srvfarm.net postfix/smtpd[1404334]: warning: unknown[103.25.134.192]: SASL PLAIN authentication failed: 
Aug  2 05:47:00 mail.srvfarm.net postfix/smtpd[1404334]: lost connection after AUTH from unknown[103.25.134.192]
Aug  2 05:49:47 mail.srvfarm.net postfix/smtpd[1403823]: warning: unknown[103.25.134.192]: SASL PLAIN authentication failed: 
Aug  2 05:49:47 mail.srvfarm.net postfix/smtpd[1403823]: lost connection after AUTH from unknown[103.25.134.192]
Aug  2 05:51:03 mail.srvfarm.net postfix/smtps/smtpd[1403451]: warning: unknown[103.25.134.192]: SASL PLAIN authentication failed:

Jul 28 05:00:08 mail.srvfarm.net postfix/smtpd[2325907]: warning: unknown[103.25.134.147]: SASL PLAIN authentication failed: 
Jul 28 05:00:08 mail.srvfarm.net postfix/smtpd[2325907]: lost connection after AUTH from unknown[103.25.134.147]
Jul 28 05:03:10 mail.srvfarm.net postfix/smtpd[2327642]: warning: unknown[103.25.134.147]: SASL PLAIN authentication failed: 
Jul 28 05:03:10 mail.srvfarm.net postfix/smtpd[2327642]: lost connection after AUTH from unknown[103.25.134.147]
Jul 28 05:09:00 mail.srvfarm.net postfix/smtps/smtpd[2353295]: warning: unknown[103.25.134.147]: SASL PLAIN authentication failed:

Jul 24 08:35:14 mail.srvfarm.net postfix/smtps/smtpd[2137407]: warning: unknown[103.25.134.245]: SASL PLAIN authentication failed: 
Jul 24 08:35:15 mail.srvfarm.net postfix/smtps/smtpd[2137407]: lost connection after AUTH from unknown[103.25.134.245]
Jul 24 08:35:52 mail.srvfarm.net postfix/smtps/smtpd[2137533]: warning: unknown[103.25.134.245]: SASL PLAIN authentication failed: 
Jul 24 08:35:52 mail.srvfarm.net postfix/smtps/smtpd[2137533]: lost connection after AUTH from unknown[103.25.134.245]
Jul 24 08:41:02 mail.srvfarm.net postfix/smtpd[2132843]: warning: unknown[103.25.134.245]: SASL PLAIN authentication failed:

SASL PLAIN auth failed: ruser=...

Jul 16 05:36:19 mail.srvfarm.net postfix/smtpd[699495]: warning: unknown[103.25.134.173]: SASL PLAIN authentication failed: 
Jul 16 05:36:19 mail.srvfarm.net postfix/smtpd[699495]: lost connection after AUTH from unknown[103.25.134.173]
Jul 16 05:42:10 mail.srvfarm.net postfix/smtpd[699401]: warning: unknown[103.25.134.173]: SASL PLAIN authentication failed: 
Jul 16 05:42:10 mail.srvfarm.net postfix/smtpd[699401]: lost connection after AUTH from unknown[103.25.134.173]
Jul 16 05:45:27 mail.srvfarm.net postfix/smtps/smtpd[708455]: warning: unknown[103.25.134.173]: SASL PLAIN authentication failed:

SASL PLAIN auth failed: ruser=...

$f2bV_matches

2020-07-0714:31:21dovecot_plainauthenticatorfailedfor\([94.74.144.30]\)[94.74.144.30]:42612:535Incorrectauthenticationdata\(set_id=info\)2020-07-0714:04:16dovecot_plainauthenticatorfailedfor\([37.239.111.82]\)[37.239.111.82]:44658:535Incorrectauthenticationdata\(set_id=info\)2020-07-0714:13:37dovecot_plainauthenticatorfailedfor\([177.130.162.234]\)[177.130.162.234]:53663:535Incorrectauthenticationdata\(set_id=info\)2020-07-0714:45:24dovecot_plainauthenticatorfailedfor\([91.222.58.28]\)[91.222.58.28]:41038:535Incorrectauthenticationdata\(set_id=info\)2020-07-0714:24:39dovecot_plainauthenticatorfailedfor\([103.109.178.210]\)[103.109.178.210]:40447:535Incorrectauthenticationdata\(set_id=info\)2020-07-0714:19:22dovecot_plainauthenticatorfailedfor\([91.231.246.232]\)[91.231.246.232]:46394:535Incorrectauthenticationdata\(set_id=info\)2020-07-0714:45:00dovecot_plainauthenticatorfailedfor\([177.130.162.178]\)[177.130.162.178]:54313:535Incorrectauthenticationdata\(set_id=info\)2020-07-0714:43:09dovecot_plainauthentica

WordPress brute force

Failed password for invalid user nde from 122.152.220.197 port 37066 ssh2

Unauthorized connection attempt from IP address 182.23.95.52 on Port 445(SMB)

From: "Congratulations" 
-	UBE - (EHLO mailspamprotection.com) (212.237.17.126) Aruba S.p.a. – repeat IP
-	Header mailspamprotection.com = 35.223.122.181 
-	Spam link softengins.com = repeat IP 212.237.13.213 
a)	go.burtsma.com = 205.236.17.22 
b)	www.orbity1.com = 34.107.192.170 
c)	Effective URL: zuercherallgemeine.com = 198.54.126.145 
d)	click.trclnk.com = 18.195.123.247, 18.195.128.171 
e)	secure.gravatar.com = 192.0.73.2 
-	Spam link i.imgur.com = 151.101.120.193 
-	Sender domain bestdealsus.club = 80.211.179.118

WordPress brute force

May 23 22:15:15 santamaria sshd\[2121\]: Invalid user ryr from 178.128.122.126
May 23 22:15:15 santamaria sshd\[2121\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.128.122.126
May 23 22:15:17 santamaria sshd\[2121\]: Failed password for invalid user ryr from 178.128.122.126 port 59470 ssh2
...

May 23 22:35:49 srv01 postfix/smtpd\[28626\]: warning: unknown\[103.207.39.104\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 23 22:35:49 srv01 postfix/smtpd\[2162\]: warning: unknown\[103.207.39.104\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 23 22:35:49 srv01 postfix/smtpd\[2164\]: warning: unknown\[103.207.39.104\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 23 22:35:52 srv01 postfix/smtpd\[28626\]: warning: unknown\[103.207.39.104\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 23 22:35:52 srv01 postfix/smtpd\[2162\]: warning: unknown\[103.207.39.104\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 23 22:35:52 srv01 postfix/smtpd\[2164\]: warning: unknown\[103.207.39.104\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...

Unauthorized connection attempt from IP address 83.239.72.218 on Port 445(SMB)

Unauthorized connection attempt from IP address 103.49.206.245 on Port 445(SMB)

May 23 22:14:59 vmd26974 sshd[26436]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=2.227.254.144
May 23 22:15:02 vmd26974 sshd[26436]: Failed password for invalid user iia from 2.227.254.144 port 20427 ssh2
...

May 23 14:15:20 Host-KLAX-C sshd[6665]: Invalid user ftp_user1 from 122.202.48.251 port 60500
...

Unauthorized connection attempt from IP address 14.162.163.60 on Port 445(SMB)

Fail2Ban Ban Triggered (2)

May 23 22:39:28 server sshd[29026]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.70.97.233
May 23 22:39:29 server sshd[29026]: Failed password for invalid user roh from 120.70.97.233 port 48196 ssh2
May 23 22:41:00 server sshd[29253]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.70.97.233
...

2020-05-23T05:32:52.685815productionscape.com postfix/smtpd[3871]: NOQUEUE: reject: RCPT from unknown[45.143.223.153]: 454 4.7.1 : Relay access denied; from= to= proto=ESMTP helo=
2020-05-23T20:15:17.607161productionscape.com postfix/smtpd[14242]: NOQUEUE: reject: RCPT from unknown[45.143.223.153]: 454 4.7.1 : Relay access denied; from= to= proto=ESMTP helo=
...