On Thu, Sep 25, 2008 at 07:07:41PM +0200, mouss wrote: > > and given that the sender may be forged, you'll be hitting an innocent dns > server. not a serious issue, but if the benefit is 0 hit, ...
I do have hits every day. Even if it's in the 0.01% region.. You are right, the point of dns queries is pretty desperate. MX's usually have high TTL and will pretty much always come from your cache. > note also that a wrong envelope sender doesn't mean you can't reply. The > From: header may still be ok. Ok that's true. But it still doesn't make it right to have a non-working envelope sender.
