Email-to-SMS is not working

magenta3742183

    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=<929920XXXX@tmomail.net>, relay=d79033a.ess.barracudanetworks.com[64.235.153.2]:25, delay=2.7, delays=0/0/0.49/2.2, dsn=5.0.0, status=bounced (host d79033a.ess.barracudanetworks.com[64.235.153.2] said: 550 permanent failure for one or more recipients (929920XXXX@tmomail.net:550 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.

     

    Thanks.

     

     

     

    *edited to remove personal information - Marissa

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