With Vlingo, the key requirements are:
- Do not set permissions to Deny in your Application Policy
- Do not set Allow Internal Connections or Allow External Connections to False in your IT Policy.
In most cases, you won't have to do anything to satisfy these requirements, as they are already met by the default BES configuration.
To simplify and shorten installation for your users so they don't have to go through as many prompts during installation, you could set up an Application Policy that explicitly sets all required permissions to Allow rather than to Prompt. However, this step is not strictly necessary.
For further detail, please see the instructions for BES administrators.