Abuse Message [AbuseID:77593C:22]: AbuseNormal: Attempts to crack our server by 176.9.80.9

 I am the sysadmin of Bobcat Open Systems
 <http://www.bobcatos.com>.
 
 Our intrusion detector has reported that a user on your network tried to
 crack our server. The log exerpts follow. Times are CDT (UTC-0500).
 
 On www.bobcatos.com (208.101.214.202):
  From the maillog:
 Oct 14 13:21:31 bubba dovecot: imap-login: Disconnected (auth failed, 4 attempts): user=<petty>, method=PLAIN, rip=176.9.80.9, lip=192.168.3.2, TLS: Disconnected
 
  From the secure log:
 Oct 14 13:21:00 bubba auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=petty@northeasttexaspower.com rhost=176.9.80.9
 Oct 14 13:21:08 bubba auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=petty@northeasttexaspower.com rhost=176.9.80.9
 Oct 14 13:21:15 bubba auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=petty rhost=176.9.80.9
 Oct 14 13:21:27 bubba auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=petty rhost=176.9.80.9
 
 So far as I know, he didn’t get in. We use fail2ban to limit
 intrusion attempts
 
 Let me know if you need any more information.
 
 Cheers,
 —
 Bob McClure, Jr. Bobcat Open Systems, Inc.
 bob@bobcatos.com https://www.bobcatos.com
 You have searched me, Lord, and you know me. You know when I sit and
 when I rise; you perceive my thoughts from afar. Psalm 139:1-2

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