RE: Improving RemoteDelivery performance

[Danny Angus]

> As for pre-scanning the queue and caching resolutions I like the idea.
> However, I'm not sure how well it would work for hosts that use a
> round-robin style DNS to load balance mail. I have a feeling they may
> not like it, but I suppose we'd just have to see.

I think you'd have to bulk per domain, not MX or you'd have to deal with cached MX 
records that expired and similar messy boundary conditions.

d.