Ping?
Doesn't anyone have some vague hint of where the problem may be?
Is it really normal for "postqueue -f" to complain about DNS errors, whereas
"/etc/init.d/postfix restart; postqueue -f" works just fine?
Stefan
>>>>> "Stefan" == Stefan Monnier <monn...@iro.umontreal.ca> writes:
> 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.
> Yet `host smtp.teksavvy.com` (which is my relayhost which I set with
> `relayhost = [smtp.teksavvy.com]` in my main.cf) responds very happily:
> % host smtp.teksavvy.com
> smtp.teksavvy.com has address 206.248.188.90
> smtp.teksavvy.com has IPv6 address 2607:f2c0:1:2304::5
> %
> I expected `postqueue -f` to solve the problem, but it didn't.
> Instead it just gives me messages in the log along the lines of:
> Nov 16 09:32:07 pastel postfix/smtp[22671]: CDC7364F79:
> to=<emacs-de...@gnu.org>, relay=none, delay=4759, delays=4759/0.01/0/0,
> dsn=4.4.3, status=deferred (Host or domain name not found. Name service error
> for name=smtp.teksavvy.com type=AAAA: Host not found, try again)
> Now, I can easily fix the problem with:
> # /etc/init.d/postfix restart; postqueue -f
> but why is it necessary to restart postfix before it notices that
> whatever DNS problem might have occurred is long gone?
> This problem re-appears pretty much every time I use the machine (it's
> suspended in the mean time).
> Any idea what my be the culprit and how to fix the problem (other thn
> with a cron job that restarts postfix all the time)?
> Stefan
