Re: [qmailtoaster] vchkpw-pop3: vpopmail user not found

[Kalil Costa - Brasilsite]

unfortunately it's not brute-force. They are real users, the error begins to appear and I get calls in my help desk reporting the problem. I'm thinking it might be mysql...... any ideia ? thks Peter Em 09-01-2012 18:33, Peter Peltonen escreveu: On Mon, Jan 9, 2012 at 7:30 PM, Kalil Costa - Brasilsite <ka...@brasilsite.com.br> wrote: Sometimes I get this error in my / var / log / maillog  'vchkpw-pop3: vpopmail user not found'   and my clients start complaining. anyone seen this? If those error messages are about nonexistent user accounts and there are a lot of those, perhaps someone is trying to guess the correct user account names and passwords by brute-force? At least googling that error pointed me to this: http://www.computersolutions.cn/blog/2009/10/how-to-setup-fail2ban-to-block-vpopmail-attacks/ As suggested by the article you can use fail2ban to prevent that kind of brute-forcing. Haven't tried that out myself yet, though. Regards, Peter --------------------------------------------------------------------------------- Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! --------------------------------------------------------------------------------- Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com --------------------------------------------------------------------------------- Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! --------------------------------------------------------------------------------- Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com