So when I migrated our servers from 2010 to 2013. I did not plan well and ended up with this.

Name                      Alias
----                      -----
Mailbox1                  PF1
Mailbox2                  Mailbox2
Mailbox3                  Mailbox3

As you can see the first mailbox is named PF1. I want to be able to change both the name and the alias, but have failed to find mechanism for doing so in ecp or powershell. Any assistance is greatly appreciated. I would also like to change the email address for these as right now they are PF1@domain.com, Mailbox2@domain.com, Mailbox3@domain.com

Thank you very much

Set-Mailbox -Identity Mailbox1 -PublicFolder -Name NewName1 -Alias NewName1 -PrimarySMTPAddress newname1@domain.com