Hi Markus & thanks for your feedback! On Tue, Feb 10, 2004 at 04:32:32PM +0100, Markus Wild wrote: > > Do big ISP have security systems, which blacklist or return a > > SMTP 55x after getting n*1000 mails from the same server? > > You'll be automatically blocked for a day if you send us more than > a (low) amount of non-existant recipients (which easily happens if...
nice concept, should be quite practical against dictionnary attacks. Have you implemented that by yourself, or was it already a feature of your MTA ? And what kind of blocking art, if I may ask: 4xx, 5xx or even iptable rule? I'll try to setup the same kind of system for our servers (qmail-vmailmgr & qmail-ldap based). regards, Olivier ---------------------------------------------- [EMAIL PROTECTED] Maillist-Archive: http://www.mail-archive.com/swinog%40swinog.ch/
