Disable “Automatically update e-mail addresses based on email address policy”
If you need to diable the “automatcially update e-mail addresses based on email address policy” option using powershell
1- For 1 user:
Set-mailbox “MailboxAddress” -EmailAddressPolicyEnabled $false
2- For the whole mailboxes:
Get-mailbox | Set-mailbox $_.Identity -EmailAddressPolicyEnabled $false
3- For some users within same OU:
Get-mailbox -OrganizationalUnit “OU name”| set-mailbox EmailAddressPolicyEnabled $false
4- For some users with the same domain name:
Get-mailbox -filter {EmailAddresses -like ‘*@Domain.com’} | Set-mailbox $_.Identity -EmailAddressPolicyEnabled $false
