Now for SMS sending we plan to use a SMPP account. We have used the delivery mode 'Bulk Delivery'. this is because, only for this type we get the option to enter the SMPP details (for the connector Extended Generic SMPP'). However, the delivery sendout using this routing account is always in 'Start Pending' state. I guess, this is because, the system is trying to send a delivery using the marketing instance and since there is no MTA running, it is not successful.
My question is - Do we need to configure this SMPP account on the mid-source instance and then use the 'Mid-sourcing' external account (with same internal name as the mid-source SMPP account) in the marketing instance? If not, what is the approach of sending SMS for this kind of architecture.