4 messages in net.sourceforge.lists.courier-usersRe: [courier-users] Re: Courier and t...
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Ken DailAug 22, 2005 11:01 pm 
Gordon MessmerAug 23, 2005 11:53 am 
Kenny DailAug 24, 2005 12:25 pm 
Sam VarshavchikAug 24, 2005 4:30 pm 
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Subject:Re: [courier-users] Re: Courier and tarpittingActions...
From:Gordon Messmer (yiny@eburg.com)
Date:Aug 23, 2005 11:53:54 am
List:net.sourceforge.lists.courier-users

Ken Dail wrote:

That is unfortunate.. We currently deploy a commercial anti-spam firewall device, and it's only option to verify recipients is either LDAP (which we don't have set up) or by making smtp VRFY or RCPT TO checks, which is bad behavior and sets off the tarpitting.

Tarpitting takes place on a per-connection basis, so tarpitting your anti-spam device effectively tarpits the spammer by proxy. The biggest problem you may run in to is that your anti-spam device may have a lot of open connections to your Courier host. You'd have to watch that and make sure your MAXPERIP setting was large enough.