Thanks MBS - that does sound a little on the dangerous side.... In the meantime, I found out how to do it through ADSIEdit:
This is so simple it is ridiculous: Open ADSIEdit, drill down to the user, and clear these 4 attributes: msExchUMEnabledFlags msExchUMPinChecksum msExchUMTemplateLink msExchUMRecipientDialPlanLink Go into Exchange and you will see that UM is now disabled for the user. Then you can delete the EUM addresses. I only have a dozen or so users, so this is no big deal by hand. not sure how you would do a bulk operation, but that's all there is to it. NOTE: there is a 5th msExchUM attribute: "msExchUMDtmfMap" I left this one in place because it was on all of my users, regardless of whether or not they had UM enabled. Thanks, Jonathan From: listsad...@lists.myitforum.com [mailto:listsad...@lists.myitforum.com] On Behalf Of Michael B. Smith Sent: Wednesday, May 6, 2015 6:04 PM To: excha...@lists.myitforum.com; ntsys...@lists.myitforum.com Subject: [Exchange] RE: Disable EUM on a mailbox after the UM server has been decommissioned? I've never needed to do this, but you should be able to look at the attributes associated with the users and manually remove them. dsquery * domainroot -filter "samaccountname=whatever" -attr * you can't copy and paste because outlook screws up the dashes. Look at one user who is ok and several who aren't. Determine the salient attributes. Clear them using your tool of choice. Be careful. :) From: listsad...@lists.myitforum.com<mailto:listsad...@lists.myitforum.com> [mailto:listsad...@lists.myitforum.com] On Behalf Of Jonathan Raper Sent: Wednesday, May 6, 2015 5:28 PM To: excha...@lists.myitforum.com<mailto:excha...@lists.myitforum.com>; ntsys...@lists.myitforum.com<mailto:ntsys...@lists.myitforum.com> Subject: [Exchange] Disable EUM on a mailbox after the UM server has been decommissioned? Hi all, We have Exchange 2007 and are in the process of migrating to O365 via 2013 Hybrid servers. In our preparations, we have discovered that about a dozen users are enabled for Exchange Unified Messaging...... The only problem is that the Unified Messaging servers were fully and gracefully decommissioned and removed from AD about 3 years ago! The Management Console and the shell both bark about not being able to reach the messaging server, and so I can't disable the UM feature from the mailboxes in the normal way. Aside from Exporting the mailbox to a PST, deleting and recreating the mailbox, and then re-importing the mail.....is there any other way around this? Thanks, Jonathan
