Ok, one more mail...but the last one (I claim)... ;-) On 29 apr 2014, at 14:45, Andrew Sullivan <ajs@xxxxxxxxxxxxxxxxxx> wrote: > The issue is that the operators in this case are externalizing their > problem. The operator makes the decision and establishes a policy > that causes mailing list postings from addresses inside the operator's > domain of control to bounce. The person who has to cope with those > bounces is the mailing list manager, and _not_ the mail domain > operator. The cost of the side effect is not actually borne by the > mail domain operator. So there certainly is damage to someone other > than the operator of the mail domain (or its customers). The problem exists if A is publishing such a policy, B is acknowledging the policy, B is generating a bounce, and the bounce is hitting the mailing list provider. I do not understand why a bounce should be generated (and not the incoming mail to B would be tagged as spam and/or null-routed). That said, the result of the above is that B is unsubscribed from the mailing list due to large number of bounces, but that is because B is recognizing the policy A is publishing. Do I get this right? Patrik
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