Task status shutting down

Hi All,

We have around 1250 remote location and one head office, Each location have own domain controllerand there is no trust relationship between anyother domain inlcuding our head office. so name resoultion is not possibile

i installed the Altiris agent in the all the system and the systems reporting the basic inventory. i have configured the NS to use Alternate URL for accessing NS in that i have given ip address of the server name.

when i opened the SMA, task status shows "shutting down" and not able to push any task.