Bug#964783: /usr/sbin/update-exim4.conf: Upgrade of package silently adds dc_local_interfaces to update-exim4.conf.conf

[Marc Haber]

On Fri, Jul 10, 2020 at 02:16:55PM +0200, Andreas Feldner wrote:
> My requirement is to have no binding to a specified IP, therefore dc_local_interfaces must not be set.

>From update-exim4.conf(8) man page:

       dc_local_interfaces
              List  of IP addresses the Exim daemon should listen on. If this
              is left empty, Exim  listens  on  all  interfaces.  Sets  macro
              MAIN_LOCAL_INTERFACES only if there is a non-empty value.

"left empty" is something other than "must not be set".

Try

dc_local_interface=""

instead of completely removing the value. Does that work?

Greetings
Marc

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