Is there a way to change multiple contacts email domain names at once? All contacts are currently in the same OU. Example: jdoe@test.com to jdoe@mytest.com.

What version of Exchange, if 2007\10 you can use powershell. If using 2003 probably you can do an ldifde export, replace the domain name and report lidfde. 3Script to Change the Primary SMTP address in Exchange 2007 http://adandexchangepowershell.blogspot.com/2011/06/script-to-change-primary-smtp-address.htmlJames Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

We are using Exchange 2007, We've created contacts for external users with a domain name of @JUD5.FLCOURTS.ORG, now all the contacts have a new domain of SAO5.ORG. These contacts are not part of our primary domain.

Yup use the script posted, start with creating a test ou and put a test contact in there and modify the script to point to the test ou.James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

The script will add new E-mail addresses to the contacts rather than change it. And you need to replace cmdlet *-mailbox to *-mailcontact. @Nismo, you can also try to use ADmodify to buck change contacts' e-mail addresses. Also suggest you do it against test contacts first. For more information, please see: Making bulk changes to Active Directory users with ADModify.NET http://www.activedir.org/Articles/tabid/54/articleType/ArticleView/articleId/45/Default.aspx Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.Frank Wang TechNet Community Support

The script will add new E-mail addresses to the contacts rather than change it. And you need to replace cmdlet *-mailbox to *-mailcontact. @Nismo, you can also try to use ADmodify to buck change contacts' e-mail addresses. Also suggest you do it against test contacts first. For more information, please see: Making bulk changes to Active Directory users with ADModify.NET http://www.activedir.org/Articles/tabid/54/articleType/ArticleView/articleId/45/Default.aspx Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.Frank Wang TechNet Community Support

Hi Nismo350, Any updates?Frank Wang TechNet Community Support

This is has been resolved. Thanks