On Wed, Sep 18, 2019 at 08:15:28AM -0000, Helmut Schneider wrote:
> > > smtp_delivery_status_filter does what I need.
> >
> > yes, smtp_delivery_status_filter is a workaround to the defective
> > design you use.
>
> I'm open for improvements. It's for my home usage, a relay in the
> internet with a static ip forwarding mails to my server at home with an
> ip changing every 24h connected via OpenVPN. What's you suggestions?
An improvement would be to configure your system to have the local
resolver immediately return "SERVFAIL" for the no longer-reachable
domains when the VPN is down. That would avoid long delays in
applications waiting to resolve known unreachable hosts, but avoid
false NXDOMAIN answers.
--
Viktor.
