> On Nov 16, 2016, at 9:44 AM, Stefan Monnier <monn...@iro.umontreal.ca> wrote:
>
> For the last few weeks, one of my machines (running Debian stable, with
> Postfix 2.11.3) gets constantly stuck with things like:
>
> % mailq
> -Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient-------
> CDC7364F79 972 Wed Nov 16 08:12:48 monn...@iro.umontreal.ca
> (Host or domain name not found. Name service error for
> name=smtp.teksavvy.com type=AAAA: Host not found, try again)
> emacs-de...@gnu.org
> r...@gnu.org
> monn...@iro.umontreal.ca
>
> [...]
> -- 17 Kbytes in 4 Requests.
Don't chroot the Postfix smtp delivery agent. It will then notice
changes in /etc/resolv.conf, rather than using a stale copy in
the chroot jail. Better don't use chroot at all, unless it is
very carefully and robustly built.
--
Viktor.
