I need your help, scenario is:

1) Exchnage 2007 environment is present with domain and SMTP address as abc.com and which is authorative.

2. I have setup zimbra with same domain name.

3. As it is authorative I cannot have a Accepted domain created as abc.com is already authorative.

4. Created SMTP connector to new Zimbra host from Hub transport.

No mail routing is working, need your help I need to deliver it ASAP, read all blogs and how exacly split domian will work with exchange 2007