There may be a time when you have the SMTP address of a user but you need to find the Active Directory user account associated with it. I found myself in need of this information while tracking a deliverability issue using the Exchange Server 2003 SMTP logs. To do this you will need to search the proxy address values for all users.
According to Hey, Scripting Guy, a proxy address is “simply an alias by which an Exchange user can be recognized by a non-Exchange mail system.”
- Open Active Directory Users and Computers
- Right-click the domain and select Find
- Go to the Advanced tab
- Select Custom Search from the Find drop-down list and go to the Advanced tab.
- In the Enter LDAP query text box, type the following:
- Click on Find Now
proxyaddresses=SMTP:user@example.com
And it will list the Active Directory account with that SMTP address attached to it.
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