Email to SMS not working

magenta4382003

    Our company's monitoring application sends email to sms.  Only t-mobile recipients are bouncing while Verizon, ATT, etc users are ok.

     

    Mar 11 06:39:24 ca-mon1 postfix/smtp[32376]: 44BB6C08D0: to=<6102034569@tmomail.net>, relay=d79033b.ess.barracudanetworks.com[64.235.154.140]:25, delay=1.3, delays=0.01/0.01/0.26/0.99, dsn=5.0.0, status=bounced (host d79033b.ess.barracudanetworks.com[64.235.154.140] said: 550 permanent failure for one or more recipients (610203xxxx@tmomail.net:blocked) (in reply to end of DATA command))

     

     

    Thank You,

    -tony

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