Comments on: Fighting spammers back http://blog.jeanpierre.de/2008/08/12/fighting-spammers-back/ Life is written in chapters but the table of contents is missing. Mon, 30 Jan 2012 22:56:59 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Preparing to move | $ cat /dev/brain > /dev/blog http://blog.jeanpierre.de/2008/08/12/fighting-spammers-back/comment-page-1/#comment-61026 Preparing to move | $ cat /dev/brain > /dev/blog Fri, 13 Feb 2009 07:06:18 +0000 http://blog.jeanpierre.de/?p=756#comment-61026 [...] thousands of spam mails to check every day (and that’s only the amount of mails that passed the first pitfalls on the way to talking to the mail server) is a little be too much for our small server. Hopefully [...] […] thousands of spam mails to check every day (and that’s only the amount of mails that passed the first pitfalls on the way to talking to the mail server) is a little be too much for our small server. Hopefully […]

]]> By: | $ cat /dev/brain > /dev/blog http://blog.jeanpierre.de/2008/08/12/fighting-spammers-back/comment-page-1/#comment-57957 | $ cat /dev/brain > /dev/blog Tue, 18 Nov 2008 03:50:37 +0000 http://blog.jeanpierre.de/?p=756#comment-57957 [...] I described in a previous post when talking about spam countermeasures on one of our servers, misbehaving mail senders are locked down using fail2ban for a certain amount of [...] […] I described in a previous post when talking about spam countermeasures on one of our servers, misbehaving mail senders are locked down using fail2ban for a certain amount of […]

]]> By: Fred Wenzel http://blog.jeanpierre.de/2008/08/12/fighting-spammers-back/comment-page-1/#comment-54305 Fred Wenzel Wed, 20 Aug 2008 18:53:54 +0000 http://blog.jeanpierre.de/?p=756#comment-54305 Unlike the methods mentioned above, greylisting still has pretty high impact. Of course, for most people it's a one-time-thing, as they'll make it onto the whitelist after they resend their first email, but it's not a generally painless process, in particular considering that people nowadays expect their emails to arrive within seconds, and are assuming something is broken if it takes longer. Also, I've read some reports before that spammers (and their softwares) are getting smarter, adapting to greylisting, slowly turning it into a technique that won't keep out spammers anymore, and only really affect legitimate users. Unlike the methods mentioned above, greylisting still has pretty high impact. Of course, for most people it’s a one-time-thing, as they’ll make it onto the whitelist after they resend their first email, but it’s not a generally painless process, in particular considering that people nowadays expect their emails to arrive within seconds, and are assuming something is broken if it takes longer.

Also, I’ve read some reports before that spammers (and their softwares) are getting smarter, adapting to greylisting, slowly turning it into a technique that won’t keep out spammers anymore, and only really affect legitimate users.

]]> By: Jean Pierre http://blog.jeanpierre.de/2008/08/12/fighting-spammers-back/comment-page-1/#comment-54304 Jean Pierre Wed, 20 Aug 2008 18:52:10 +0000 http://blog.jeanpierre.de/?p=756#comment-54304 We've been having issues with graylisting -- some (important) business contacts don't know how to configure their mail host properly or refrain to do so. Sad but true. Therefor: no graylisting. For now. We’ve been having issues with graylisting — some (important) business contacts don’t know how to configure their mail host properly or refrain to do so. Sad but true. Therefor: no graylisting. For now.

]]> By: Lupus http://blog.jeanpierre.de/2008/08/12/fighting-spammers-back/comment-page-1/#comment-54147 Lupus Tue, 12 Aug 2008 08:24:39 +0000 http://blog.jeanpierre.de/?p=756#comment-54147 You didn't use greylisting? That cuts off 90% of spam ob our servers. You didn’t use greylisting? That cuts off 90% of spam ob our servers.

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