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Exchange 2016 and wireless carriers email to text service.

Posted on 2016-08-01
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Last Modified: 2016-08-24
Good morning all, I have a small dilemma. We have a small forest in our environment and the Exchange server is in a child domain however the Exchange Domain reflects the Parent (root) domain, now this has been this way as long as I have been here, we started on Exchange 2007 and now have since upgraded to 2016. The issue we are having is some of the equipment in our lab relays alerts through our exchange to both various email domains like Yahoo, google, Comcast etc. as well as sending the emails to Verizon's vtext.com for converting emails to text to go to phone, since the upgrade everything works perfect EXCEPT the email to Text "domains" sprint, Verizon AT&T all of them the email goes out of our network we can follow the traffic, but the people that should, never receive their text alerts, and to make matters worse I am getting no NDRs to give me any info what may be causing the issue. Any thoughts???
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Question by:Chartierj
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Expert Comment

by:Phonebuff
ID: 41738293
Good Evening,

    Sorry, you are having issues.  But this may be the new reality.  Many of the carriers have changed there SMTP gateways in many ways to "protect" the network from Spammers.    

  If your Domain, or your IP has been unlucky enough to end up on one of the various black list products out there this is exactly what you will see, they don't even bounce it back as they don;t want to help the spanner figure out the issues.  

  You might try just sending an email to number@vtext.com.   Also you might try using a telnet session and just connect and walk through the prompts this might help.  Lastly, if you have a log entry you can try to submit it to them, but most likely the answer is going to be find an SMS carrier to handle this for you and route the traffic reliability to the phones.

   As an aside, my company does this for many Government agencies.
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ArneLovius earned 2000 total points (awarded by participants)
ID: 41739331
You can check with sites such as mxtoolbox.com to see if you are any RBLs (Realtime Block Lists), but it could also be that you have been specifically blocked from vtext.com.

If your log shows a 220 delivered message, then you would need to reach out to vtext to discover the reason for the lack of delivery
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by:ArneLovius
ID: 41768438
question appears to be abandoned, selected best answer
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