It appears that Simmons, Jay via NANOG <jsimm...@semmes-murphey.com> said: >-=-=-=-=-=- >This may be the issue
Sorry, but no. >Here are some details on this Government protocol implemented by all Telecom >Carriers. > >Why it is being done? To support FCC mandate for STIR/SHAKEN, an industry set >of rules designed to authenticate >and validate CallerID information associated with phone calls using digital >signatures. > >SHAKEN/STIR ... STIR/SHAKEN only affects voice calls. It has nothing to do with SMS. As several other people have said, if you're sending safety critical SMS messages, use a real SMS service, not a carrier's courtesy low volume e-mail gateway. SMS services are not free, but they are not expensive, typically about 1/2 cent per message. R's, John