I'm trying to use Microsoft Outlook to send an email that is received as a text message. Here's the error message this I receive:
The following message to <XXXXXXXXXX@tmomail.net> was undeliverable.
The reason for the problem:
5.3.0 - Other mail system problem 550-'permanent failure for one or more recipients (XXXXXXXXXX@tmomail.net:blocked)'
This works fine sending to ATT or Verizon phones but not T-Mobile. I've tried with both my main number and a Digits line with the same error message.
Best answer by magentatechieView original