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SMS - SMS No Delivery

SMS No Delivery
08.02.2017 12:22 PM
I have an application sending SMS under user control (not a mass send). It is using the email gateway (@att.txt.net). The purpose is to send an appropriate URL for further assistance. If I send this URL: https://goo.gl/XqxRFe the message does not go through. If I send this URL: https://www.cnn.com the message goes through fine. This is a new problem. I get no "bounce back" from ATT explaining why the message is not delivered.
Re: SMS No Delivery
08.07.2017 02:47 PM
Hi Jay,

Are you using an application that you created on the Developer Portal? Could you explain a bit more about how your application sends an SMS?

Thanks,
AT&T Develope Support