Hello!! Mayb this question is ask'd many time's on this mailing list ... but here i go again ... Senario: I've installed ISA and Exchange on Same machine, after config. my client pc i was able to browse, and i was able to send enternal mail's but when i configure Outlook ... i recive this error ... "Domain XYZ can not be contacted make sure u have type'd the right name" it was sum thing lke tht ... currently i hve mail accounts on my Service Provider's Mail server ... pls can any one tell me where i have to make changes in order to get mail's from sum other domain ... Regards, Mahib.