master/slave setup via VPN?

[Thorsten Schnebeck]

Am Monday 21 July 2008 um 12:35:37 schrieb Thorsten Schnebeck:
> On Monday 21 July 2008 11:45:39 Alain Spineux wrote:
> > On Sun, Jul 20, 2008 at 1:32 PM, Thorsten Schnebeck
> >
> > <thorsten.schnebeck at gmx.net> wrote:
> > > Am Samstag 19 Juli 2008 schrieb Alain Spineux:
> > >> On Fri, Jul 18, 2008 at 10:38 PM, Thorsten Schnebeck
> > >
> > > When I ping to slave.domain2.com now it pings to 10.10.10.2
> > > but postfix still want to deliver to the real IP. I also insert
> > >
> > > smtp_host_lookup = native,dns
> >
> > Hmm, yes maybe, I didn't know about that
> > but "disable_dns_lookups" looks more appropriate.
> > I was thinking "disable_dns_lookups" was the default, happy
> > to learn something new
>
> /kolab/sbin/postconf -d | grep _dns_
> disable_dns_lookups = no
>
> I changed it to "yes" and now this works without timeout and forced
> relaying :-)

BUT...
now some mail servers do not like my server anymore:
status=deferred (connect to gmx.net[213.165.65.50]: Connection timed out)

If I change this back to "no" everything is fine
relay=mx0.gmx.de[213.165.64.100]:25, delay=1087, delays=1087/0.05/0.13/0.17, 
dsn=2.6.0, status=sent (250 2.6.0 Message accepted {mx007})

So, while this option helps for my local vpn setup, is a showstopper for my 
global system.

Bye

  Thorsten