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.

Hi, If you are publishing the Exchange server through an ISA or TMG server you can use 2 different certificates - one internal and one external. Another option would be to use only the external domain name, and have users always connect using the external domain name Leif

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.

i, his should help: http://blogs.technet.com/b/exchange/archive/2010/07/16/3410408.aspx Leif

Hi, >>Exchange can work with two certificate one for internal and another for external?????????? and how can i does that?? I am sure, after you read the following three topic, you will be able to do it by yourself. VIDEO: Certificate Wizard in Exchange 2010 Exchange 2010 EMC and Certificates Management Part – 1 Exchange 2010 SSL Installation Guide Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.