Bug#833296: exim4-config: dpkg-reconfigure exim4-config: misleading message

[Mauro Salvini]

On Wed, 2016-08-03 at 13:49 +0200, Marc Haber wrote:
> On Wed, Aug 03, 2016 at 01:45:33PM +0200, Mauro Salvini wrote:
> > On Wed, 2016-08-03 at 10:44 +0200, Marc Haber wrote:
> > > What does getent hosts $IP for all your IP addresses say?
> > 
> > getent hosts 127.0.0.1
> > 127.0.0.1       localhost
> > 
> > getent hosts 127.0.1.1
> > 127.0.1.1       myhostname.mydomain.local myhostname
> > 
> > getent hosts 10.0.xx.xx		# LAN address
> > 10.0.xx.xx     myhostname
> 
> I would investgate this
> 
> > getent hosts 10.0.yy.yy		# WIFI address
> > 10.0.yy.yy      myhostname
> 
> and this. This should give a fully qualified output as well, I think.
> 
Hi Marc,

I found some interesting at this page:

https://wiki.debian.org/PkgExim4UserFAQ

paragraph 1.2.3 references to:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=756224

libnss-myhostname is installed on my system (version 
0.3-9).

After reading bug report discussion, I tried to remove myhostname
from /etc/nssswitch.conf:

#hosts:          files myhostname mdns4_minimal [NOTFOUND=return] dns
hosts:          files mdns4_minimal [NOTFOUND=return] dns

With this configuration, exim -bP | grep ^primary_hostname states:

primary_hostname = myhostname.mydomain.local

Message #114 in bug report points me to this.

So is libnss-myhostname the problem?

Regards
Mauro