One of the email messages is being forwarded via my friend's BB to an unknown email address. He didn't forward the email himself. Has the BB been affected by virus or something? Do anyone has any idea about what this is about?
- An email address the BB's been set up to collect mail from, or
- The BB's 'own' email address
2. How do you know it's being forwarded to an unknown address?
3. Are they all from the same person? It may be that person's email system that's be compromised and all the mail they send to anyone is being forwarded elsewhere...
Basically, consider the route the email takes, and who it's from. It potentially could be being compromised at any point.