msExchHomeServerName After O365 migration

Since my migration to Office 365 I’ve been working on cleaning up my domain and removing my Exchange 2003 Server. During the ‘uninstall’ of Exchange 2003 I got an error saying that mailboxes were still connected. Seeing as the server has been off for a few weeks and no one had complained I figured there just had to be an Active Directory hook.

After looking around I found there is an attribute ‘msExchHomeServerName’ that was pointing to my old Exchange server. I cleared it from my user account using ADSI Edit and everything seemed to be working okay. Then the problem came on how to remove it from everyone. I figured Powershell would have something that would work and followed this site, which had the PS command at the bottom. But, my issue was that I didn’t want to set it to anything, I just wanted to clear it. So, after some testing I utilized this command:

ImageI could not figure out what the actual value of msExchHomeServerName was, so I used a wild card. The -Clear function in the Set-ADUser worked great for me.

VMware vSphere 5.1

I recently upgraded my VMware licensing to vSphere 5.1 Essentials Plus. With this I was able to utilize HA in a cluster. Since enabling HA, I’ve been getting this error:

Host hostname currently has no management network redundancy

It took me awhile to actually figure out what was wrong, and I couldn’t remember that it actually happened when I added the host to the cluster. Anyway, here is the link to the VMware article that solved my problem. Hopefully this helps someone find the answer faster than I did.