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Find any E-Mail Address or Proxy Address In Active Directory

I am back this week with some more Exchange and Unified Communications goodness. This is another request I see a lot, someone want's to know where an e-mail address is assigned. This opens up the possibilities of user mailboxes, shared mailboxes, distribution lists, public folders, conference rooms, contacts or resources. I have also seen duplicate e-mail addresses being assigned outside of Exchange causing delivery failures. I take a look at how you can quickly find any e-mail address in your environment along with partial searches of e-mail addresses. The two attributes for e-mail addresses being mail and proxyAddresses.

I cover finding specific types of proxy addresses such as sip: x500: eum: etc. I also touch briefly on creating a simple function that will accept e-mail addresses as an input to return all of the AD objects that contain it. I cover the search through Active Directory commandlets, including LDAP query syntax, as well as the Exchange commandlets. Head on over to for the full article.

Delete Specific E-Mail or E-Mails From All Exchange Mailboxes

Well this is week number two in my quest to post an article once a week and I am back with a common request for Exchange administrators. There are a lot of scenarios that bring up a need to remove an e-mail or e-mails from all mailboxes in your environment. Perhaps there was a disgruntled employee, a virus outbreak, or a reply all to the whole company. We all know that the "Retract" button is best effort (yes I still miss GroupWise for that purpose).

As always we can turn to PowerShell for our scripting needs. The Search-Mailbox command is your best friend for these scenarios. With a simple Get-Mailbox | Search-Mailbox you can take control of all your mailboxes. Be extremely cautious when executing, with great power comes great responsibility. For a full run down on how to accomplish this head on over to I look forward to seeing everyone again next week!

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