Hi all, I am trying to set up the postmaster@company.com email address for our Exchange ORG. (running Exchange 2003SP2). If i make a search in AD, i cannot find postmaster@company.com, but if i try to set the email address on an account i get the following error: ID no: c10312e7 This e-mail address already exists in this organization

lets run the following command to find which user has got the postmaster email address stamp. csvde -f C:\postmaster.csv -D DC=company,dc=com Now open up postmaster.csv file and search for postmaster@company.com This way you would be able to find out which object in the AD has got this email address stampedPlease 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. Hasnain Shaikh| My blogs: http://messagingserversupport.com

Try the below steps to find out the address and then do the needful. Using the Windows 2003 Active Directory Users and Computers utility, right click on the domain, choose Find. In the Find: dropdown list, choose Custom Search and in the In: dropdown list, choose Entire Directory. Click the Advanced property page and enter the following LDAP query (in my example, at least): proxyaddresses=smtp:postmaster@domain.com Click Find and you should find the object that already has that SMTP address. However for me once I found the culprit I was surprised to see that the group which had the proxy address wasnt current Exchange-enabled !!! i.e. Pull up the properties in Active Directory Users and Computers and note there are no Exchange tabs. Thus I had to do the following: Simple Solutions: In ADUC Right-click the offending object->Click Exchange TasksSelect Remove Exchange AttributesAs long as successful all should be done, otherwise see below. Complicated Solution: Install the Windows Server 2003 Support Tools from the Win2003 CDStart->Run->ADSIEDIT.MSC (Big disclaimer here you can really do damage with this, so youre on your own, dont blame me!)Navigate to the object returned in the steps above. Right-click->PropertiesFind the proxyAddresses attribute, Click Edit.Remove the offending SMTP e-mail address. Thanks

Try the below steps to find out the address and then do the needful. Using the Windows 2003 Active Directory Users and Computers utility, right click on the domain, choose Find. In the Find: dropdown list, choose Custom Search and in the In: dropdown list, choose Entire Directory. Click the Advanced property page and enter the following LDAP query (in my example, at least): proxyaddresses=smtp:postmaster@domain.com Click Find and you should find the object that already has that SMTP address. However for me once I found the culprit I was surprised to see that the group which had the proxy address wasnt current Exchange-enabled !!! i.e. Pull up the properties in Active Directory Users and Computers and note there are no Exchange tabs. Thus I had to do the following: Simple Solutions: In ADUC Right-click the offending object->Click Exchange TasksSelect Remove Exchange AttributesAs long as successful all should be done, otherwise see below. Complicated Solution: Install the Windows Server 2003 Support Tools from the Win2003 CDStart->Run->ADSIEDIT.MSC (Big disclaimer here you can really do damage with this, so youre on your own, dont blame me!)Navigate to the object returned in the steps above. Right-click->PropertiesFind the proxyAddresses attribute, Click Edit.Remove the offending SMTP e-mail address. Thanks

You can use costum search with ADUC to get rid of from un-wanted Proxy address. Here is the link showing how to do it , You do not need to mess with ADSIedit. Locating Duplicated SMTP Proxy Address in Active Directory http://smtp25.blogspot.com/2007/08/locating-duplicated-smtp-proxy-address.html Good Luck ocd Oz Casey, Dedeal MCITP (EMA), MCITP (EA), MCITP (SA) Visit smtp25.blogspot.com Visit Telnet25.wordpress.com This posting is provided AS-IS with no warranties or guarantees and confers no rights.

Hi Thomas, By default, the email address postmaster@comany.com is added on the Administrator account. If you don't see it on Administrator account, you can follow this document to find it: Finding Duplicate SMTP Addresses http://www.msexchange.org/articles/Finding-Duplicate-SMTP-Addresses.html Thanks, EvanEvan Liu TechNet Community Support

Hi Thomas, By default, the email address postmaster@comany.com is added on the Administrator account. If you don't see it on Administrator account, you can follow this document to find it: Finding Duplicate SMTP Addresses http://www.msexchange.org/articles/Finding-Duplicate-SMTP-Addresses.html Thanks, EvanEvan Liu TechNet Community Support