Symptom
SMS not received by user in Guest "Reset Password" flow when using a custom SMTP API Destination Address in the SMS Gateway configuration.
Initial SMS for "Guest Registration" its sent as expected for the user to get the credentials, but if later on, user attempts the "Reset Password" flow in the Guest Portal, no SMS its received. Portal shows no error and mentions that SMS was sent successful.
Conditions
-ISE 3.2.
-Custom value "SMTP API Destination Address" in the SMS Gateway config.
Workaround
Remove value from "SMTP API Destination Address" in the SMS Gateway configuration.
Further Problem Description
This happens due the dynamic substitution of $mobilenumber$ not working as expected for this specific flow.
Without the custom value in "SMTP API Destination Address", flow works as expected and both SMS are received by user.
