We have an automated process that sends out text messages on a mass scale. This process has been running for some months now. Recently I've noticed that when sending text messages from the number used to certain numbers the message never actually gets delivered even though the status of the message is delivered. I confirmed this by sending a message to my personal cell phone.
Is it possible that the sending number is marked as spam with certain carries and being blocked that way?.. if so how can i find out to confirm this with said carries?.. also is there anyway to get that number unblocked with those carriers?