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
