Re: why every minute: 'reload configuration /etc/postfix' - SOLVED

6 msg	DSN relay host
1 msg	Restrict sender and from to one domain on outbo...
10 msg	Outbound postfix routing issue
25 msg	Problem with Black List
3 msg	Looking at new mail server layout

why every minute: 'reload configuration /etc/po...
\ Andy Spiegl (7 May 2008)
. \ (Wietse Venema) (7 May 2008)
. . \ Andy Spiegl (8 May 2008)
. . . \ Ralf Hildebrandt (8 May 2008)
. . . . \ Arne Hoffmann (8 May 2008)
. . . . \ Andy Spiegl (8 May 2008)
. . . . . \ Victor Duchovni (8 May 2008)
. . . . . . \ Ralf Hildebrandt (8 May 2008)
. . . . . \ Arne Hoffmann (8 May 2008)
. . . . . \ Bill Cole (8 May 2008)
. . . . . . \ Andy Spiegl (9 May 2008)
. . . . . . . \ (Wietse Venema) (9 May 2008)
. . . . . . . . \ Andy Spiegl (9 May 2008)
. . . . . . . . . \ (Wietse Venema) (9 May 2008)
. . . . . . . . . \ Bill Cole (9 May 2008)
. . . . . . . . . . \ Ralf Hildebrandt (9 May 2008)
. . . . . . . . . . . \ Ralf Hildebrandt (9 May 2008)
. . . . . . . . . . . . \ (Wietse Venema) (9 May 2008)
. . . . . . . . . . . . . \ Harald Koch (9 May 2008)
. . . . . . . . . . . . . . \ Ralf Hildebrandt (9 May 2008)
. . . . . . . . . . . . \ Bill Cole (9 May 2008)
. . . . . . . . . . . . . \ (Wietse Venema) (9 May 2008)
. . . \ (Wietse Venema) (8 May 2008)
. . . \ Tomasz Suchodolski (8 May 2008)
. . . . \ Andy Spiegl (8 May 2008)
. . . . . \ Victor Duchovni (8 May 2008)

2 msg	myhostname parameter
17 msg	RBL problems with smarthost on private address ...
34 msg	Backscatting filter?
3 msg	how to setup postfix in 'deliver-only' mode?
7 msg	Slow queue configuration
17 msg	Some Windows SMTP Server have problems with STA...
5 msg	For each check_ns or each check_mx, the value i...
4 msg	postfix and spf
2 msg	Password Validation in postfix
4 msg	catching some spam with warn_if_reject and reje...
9 msg	RFC: Check mail quota at a mail relay (backscat...
31 msg	GPS vs GLD (greylisting)
3 msg	Unmeant update from 2.2.10 to 2.5.1
27 msg	mailq lockups

Subject:	Re: why every minute: 'reload configuration /etc/postfix' - SOLVED
Group:	Postfix-users
From:	Bill Cole
Date:	8 May 2008

At 6:08 PM +0200 5/8/08, Andy Spiegl wrote:
>I found the culprit: bind9 causes postfix to reload.

That is not normally the case. I have run BIND 9 and Postfix together
on the same machine on a variety of OS's and never have seen them
interact as you describe.

>The whole problem is a combination with a watchdog that checks whether
>bind is running correctly. It uses "rndc status" which seems to have
>a bug in Debian 4.0:
> # rndc status
> rndc: symbol lookup error: /usr/lib/libbind9.so.0: undefined
>symbol: isc_net_pton
>
>As this test fails, it kills and restarts bind.
>This happens every minute.

That sounds like a broken "watchdog" and a broken installation of BIND.

>The only part that I still don't understand (but doesn't matter anymore):
>
> How are bind and postfix connected???

They normally are not. I'm just guessing, but I'd say that whatever
that broken watchdog is doing when it "restarts bind" is also
restarting Postfix, which is a pointless and likely harmful behavior.

You probably need to do 3 things:

1. Fix your BIND installation so that you have a working rndc
2. Fix your watchdog so that it can tell the difference between a
test that cannot run and a test that runs but gets a bad result.
3. Fix your watchdog so that it responds to detected failures with
specific corrective actions narrowly focused on the actually detected
failure.

--
Bill Cole
bill