Email-to-SMS is not working


    Hi we are running a application which sends notification as email-to-sms. For t-mobile receipients notifications are getting bounced while for ATT & Verizon its working fine.

    here is the error log on our mail server


    to=<>,[]:25, delay=2.7, delays=0/0/0.49/2.2, dsn=5.0.0, status=bounced (host[] said: 550 permanent failure for one or more recipients ( Rejecting for Sender Policy Framework) (in reply to end of DATA command))


    Our domain has SPF record and other checks inline. I suspect something is at t-mobile mail server which is blocking messages.

    Any one has any context on this.






    *edited to remove personal information - Marissa

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