SYMPTOM:
When sending content to a user that has a Hotmail address, the content is never received and there are no errors during service execution in Strategy Narrowcast Server 8.1.x.
CAUSE:
This is an issue with the security in the Hotmail application. Users do not receive the content because the messages are blocked.
ACTION:
To resolve this issue, contact Hotmail support and ask them to allow this content to be delivered.