If they are originating from the same block of IP addresses, can you block that range?
Tom ----- Original Message ----- From: "for imail listserv " <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, June 13, 2002 8:55 AM Subject: Re: [IMail Forum] bruteforce attack > Can not block since they are changing every 5-10 minutes. > > Where can I find a blocker? > > > > > ---------- Original Message ---------------------------------- > From: "Jason Newland" <[EMAIL PROTECTED]> > Reply-To: [EMAIL PROTECTED] > Date: Thu, 13 Jun 2002 08:38:58 -0500 > > >Try blocking the IPs at your border router. Else, purchase a > Blocker that > >prevents Dictionary attacks. > > > > > > > >Jason > > > >----- Original Message ----- > >From: "for imail listserv " <[EMAIL PROTECTED]> > >To: <[EMAIL PROTECTED]> > >Sent: Thursday, June 13, 2002 8:14 AM > >Subject: [IMail Forum] bruteforce attack > > > > > >> We are under a bruteforce dictionary attack. Has been going on > >> for the last 24 hours. > >> > >> They are pretty good since they change ip address for every > >> connection and only try 25 email addresses. > >> > >> We are not using SMTP Authentication yet but it is the plans for > >> the next 2 weeks or so. > >> > >> Any idea on how to stop this. > >> > >> H. > >> > >> ________________________________________________________________ > >> Sent via the WebMail system at i360.net > >> > >> > >> > >> > >> > >> Please visit http://www.ipswitch.com/support/mailing-lists.html > >> to be removed from this list. > >> > >> An Archive of this list is available at: > >> http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > >> > >> Please visit the Knowledge Base for answers to frequently asked > >> questions: http://www.ipswitch.com/support/IMail/ > >> > > > > > >Please visit http://www.ipswitch.com/support/mailing-lists.html > >to be removed from this list. > > > >An Archive of this list is available at: > >http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > > > >Please visit the Knowledge Base for answers to frequently asked > >questions: http://www.ipswitch.com/support/IMail/ > > > > > ________________________________________________________________ > Sent via the WebMail system at i360.net > > > > > > Please visit http://www.ipswitch.com/support/mailing-lists.html > to be removed from this list. > > An Archive of this list is available at: > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > > Please visit the Knowledge Base for answers to frequently asked > questions: http://www.ipswitch.com/support/IMail/ > Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit the Knowledge Base for answers to frequently asked questions: http://www.ipswitch.com/support/IMail/
