I have installed ZCS 7 as our Staging eMail System. We have two set of eMail users
1. Users on the run.
2. Users in Office.
As our organisation does not has public ip; we have configured the roaming users with the ISP and the local users in ZCS7.
The local users are able to send eMails to other local users where as they are not able to send the eMails to roaming users. Similarly the roaming users are not able to send eMails to the local users.
ISP eMail domain is xyz.org; the same is configured in for the local users also.
Kindly help me. Thanks in advance.