5 messages in net.sourceforge.lists.courier-maildropRe: [maildropl] Quota bounces using m...
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email builderAug 12, 2005 10:52 pm 
Sam VarshavchikAug 13, 2005 4:47 am 
email builderAug 13, 2005 5:15 am 
Tony EarnshawAug 13, 2005 8:06 am 
email builderAug 15, 2005 4:55 pm 
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Subject:Re: [maildropl] Quota bounces using mailbot?Actions...
From:email builder (emai@yahoo.com)
Date:Aug 13, 2005 5:15:55 am
List:net.sourceforge.lists.courier-maildrop

--- Sam Varshavchik <mrs@courier-mta.com> wrote:

email builder writes:

Hi everyone,

We are seeing some undesirable behavior with some of our users who are over quota... some spam gets in under the radar, and even though it might be processed with SA or whatever, if it goes to a user who is over quota, maildrop will bounce it to the "sender", which in the case of spam is forged.

So... we become a source of backscatter. Not nice. So we are wondering, is there a way to avoid this beside blocking all "spam" outright (which is not a business we'd like to get involved in for obvious reasons)??

Yes. Use the current version of Courier, whose current version of maildrop

reports an out-of-quota condition as a temporary failure condition,

Oh. Well... we are using Postfix, and I don't think we'll be changing that any time soon. :(

Anyone done something like this with postfix/maildrop?? Do people just end up eating this? I'm surprised no one has tried to do something about this before now (under other MTAs)...?

Thanks

which works together with Courier's built-in backscatter suppression logic to eliminate all backscatter by rejecting all subsequent delivery attempts to the same mailbox with an SMTP temporary failure indication. If the mailbox

goes back under quota reasonably soon, no mail will be lost.

The default configuration settings in the current version of Courier will never generate any backscatter. It case of locally-originated screwups Courier will eat the bounce.