On 18.3.2008 1:24, Zenon Panoussis wrote:
> Suggestion and RFE: first check the validity of the destination
> address, only then check the RBLs. This order would not increase
> the workload of the courier server, but it would decrease traffic
> and the load on the RBL servers.
The suggested change would make dictionary attacks a bit more effective, 
if it was widely adopted. IHMO it is better to reject for a reason that 
doesn't reveal too much from the receiver's environment.

esa


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