Re: [Exim] Checking against "seen" Message-ID:'s to drop bou…

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Autor: Christian Balzer
Data:  
Para: exim-users
Assunto: Re: [Exim] Checking against "seen" Message-ID:'s to drop bounces
Daniel wrote:
>Peter Bowyer wrote:
>> Some people here have discussed an alternative solution which drops a
>> cryptographically-derived cookie in the return-path of all outgoing
>> mail, and on the incoming side you reject null-sender mail which
>> arrives to the 'bare' address, and verify the cookie otherwise.
>
>Well, all these setups have one basic problem. If legitim mail is not
>sent out via your servers, bounce mails are rejectet/dropped allthought
>they should be delivered.
>

Yes, absolutely. Which is why you make this a per user option and
also make very sure that your users are quite aware of this fact.

Like all tools, it can be used to create the desired effect or a
bloody mess.

Regards,

Christian Balzer
--
Christian Balzer        Network/Systems Engineer                NOC
chibi@???       Global OnLine Japan/Fusion Network Services
http://www.gol.com/