On 09/01/2013 08:47 PM, Roman Gelfand wrote: > But these emails ultimately do get sent out. It could take a long time. > To me it sounds odd that they don't know their DNS lookups are screwed > up. And if they do know, why are they placing such strict constraints > on incoming mail.
Usually there are two or more ISP servers responsible for your block's reverse DNS (or for delegating it). I'd make sure they all return the same thing.
