[SR-Users] _w_t_relay_to(): t_forward_noack failed when forwarding call

[Daniel Tryba]

On Thu, Nov 07, 2019 at 04:53:43PM +0200, Konstantinos Merentitis wrote:
> I tried to modify the failure route in order to also forward not answered (failed?) calls to asterisk mailbox but i get the following error and the call is never forwarded:

You appear to do the same thing I do, except setting $du to null. If the
user is REGISTERed $du will be set to their endpoint, changing $ru will
have no effect on routing.

So add 
$du=$null;
in the TOVOICEMAIL route before route(RELAY) and see what happens.