On Sat, Jul 18, 2009 at 7:39 AM, Dean Brooks<dean@???> wrote:
>> !hosts = ${lookup dnsdb{ptr=$sender_host_address}{$value}fail}
> Try this instead:
> !condition = ${lookup dnsdb{defer_never,ptr=$sender_host_address}{yes}}
Ugh, when I have tunnel vision it is annoying. It's a condition, not
a host. Duh.
> The "defer_never" is important. Without it, you might end up sending
> a temporary error (4xx) code back to the sender if any part of the DNS
> lookups hang for some reason. Unless that's what you want to have happen.
> There's more detail about the defer_xx items in section 9.12 in spec.txt.
My gut reaction was that a 4xx is what I want, but I will err on the
side of caution first.
> We also don't want to use "fail" in the failure of the lookup unless
> you want to cause a 4xx code back to the sender if they don't have a
> PTR record. That would be bad.
Makes sense, that verbage about fail didn't quite make a distinction
to me about when to use it the first few times I read it, I'll read it
again and see if I can understand the context to use it.
Thank you.
--
Regards... Todd
