Send Emails to Distribution Group

Hi All,

I have a scenario where we need to create one distribution group and 4 users in that distribution group. There are almost 70 companies who will send email to this distribution group.

Now i want to achieve below goals,

1) lets support i create an distribution group abc@contoso.com and add 4 members in this distribution group.

user1, user2, user3,user4

2) If Company A send email to abc@contoso.com only user1 & user2 will receive that email.

3) If Compnay B send email to abc@contoso.com only user3 & user4 will receive that email.

Is there any possibility to achieve this goal i am using Exchange 2010 with Microsoft Forefront Online Protection.

Thanks & Regards,

Zeeshan Butt