we have internal domain example.com (we do not owner this domain ) We have Exchange server 2010 join for this domain Exchange .example.com we have extarnal domain Example222.com we ask DigiCert to create certificat for exchangeserver .but they reject our example.com they said another persone is owner this domain we cannot create certificate inclouded this domain. my question? i test our exchange domain internal with certificate from our authority server Exchange can work with two certificate one for internal and another for external?????????? and how can i does that?? Mohamed Abd Elhamid Abd Elaziz Microsoft System Administrator Abdul Samad Al Qurashi Co.

thanks for reply sorry i' new on exchange server u can explain me two way but step by step i had TMG server 2010 and i will publishi exchange through itMohamed Abd Elhamid Abd Elaziz Microsoft System Administrator Abdul Samad Al Qurashi Co.

thanks for reply Mohamed Abd Elhamid Abd Elaziz Microsoft System Administrator Abdul Samad Al Qurashi Co.