Resolved: Known Issue Impacting Duo SMS Passcode Requests (for AT&T and Verizon customers only)

Duo\’s telephony provider has reported that they\’ve resolved the issue and SMS messages are expected to complete successfully now.

More information: Resolved: Known Issue Impacting Duo SMS Passcode Requests (for AT&T and Verizon customers only)

Story added 8. January 2018, content source with full text you can find at link above.