Hello all,
I have an Exchange Server 2013 and I would like to limit the allowed external Domains for all Users to just one.
So I created a new send connector with only this domain. Sending to this domain now works fine.
BUT:
All emails send to the other domains will be stuck in the queue for the configured retry time (1day) and then produce an NDR
#550 4.4.7 QUEUE.Expired; message expired in unreachable destination queue. Reason: A matching connector cannot be found to route the external recipient ##
QUESTION:
How can I get the NDR instantly with out the delay of one day. But I would like to still have a high retry value for all other errors.
Thank you,
Alex