On 14 Oct 2019, at 12:47, Jeremy Harris via Exim-dev <exim-dev@???> wrote: > You're not missing anything. Exim just uses the system resolver library
> and doesn't currently use any interface to specify a particular
> nameswerver. I don't even know if there is such an API, and I'd
> suggest not going looking; the resolver interface is IMHO particularly
> badly documented.
Good, I'm glad I wasn't being daft. And thanks for the pointer to "not" :)
> Perhaps there's some perl library that does its own dns lookups, not
> using the system libraries? That would be an alternate route, assuming
> you're willing to use a ${perl } expansion.
I was trying not to have to go there, but if needs be I will. I'll probably wrap Perl's Net::DNS module into a readsocket lookup as I don't have Perl functionality in Exim in this environment.
