Wietse Venema:
> > >> 2.) Do AAAA/ip6.arpa lookup occur on client connects from IPv4
> > >> addresses or only when a client connects by IPv6 (name/reverse lookups)?
> > >
> > > The Postfix SMTP server's FCRDNS lookups use the getnameinfo() and
> > > getaddrinfo() system library functions. In dual-protocol mode,
> > > Postfix invokes getaddrinfo() with hints.ai_family=PF_UNSPEC; it
> > > would be smarter to pass the client's address family instead.
> > >
> > > Wietse
> >
> > Is the last point still on todo list or considered worth to be
> > included in the future?
>
> It is not a high priority. Moreover, this means ripping up a
> low-level API, so it would take longer. I'm still fixing code
> that was merged into Postfix 9 years ago.
Fixed. Grumble. Another to hours of analysis, implementation, test,
documentation, and review.
Wietse
