IT Dribble

When trying to restore a Windows Server 2008 R2 backup from disk it failed immediately with error 0×80042406
The solution was to hit Shift-F10 and bring up the command prompt, from there type:

diskpart

list all the disks on the machine and find your target disk:

list disk 

Select our destination in this scenario is disk 0 (Yours may be different)

select disk 0

Now we wipe all partition information and filesystem tables on the disk we selected above (destructive!)

clean all

Now try your restore again!

where {$_ -match “SomeString”}

Or Inverse match (grep -v)
where {$_ -notmatch “SomeString”}

Find all users who have Full Access to the mailbox of others:

Get-Mailbox -ResultSize Unlimited | Get-MailboxPermission | ? {($_.AccessRights -match "FullAccess") -and 
not ($_.User -like "NT AUTHORITYSELF")} | ft Identity, User

Finding all users who have Send-As :

Get-Mailbox -Resultsize Unlimited | Get-ADPermission | ? {($_.ExtendedRights -like "*send-as*") -and -not
($_.User -like "nt authorityself")} | ft Identity, User -auto

Finding all users who have Send-As (Restricted to an OU):

Get-Mailbox -Resultsize Unlimited | Get-ADPermission | ? {($_.ExtendedRights -like "*send-as*") -and
($_.Identity -like "*/SomeOU/Users/*") -and -not ($_.User -like "nt authorityself")} | ft Identity, User -auto

Find out who a particular user can Send-As:

Get-Mailbox -Resultsize Unlimited | Get-ADPermission | ? {($_.ExtendedRights -like "*send-as*") -and -not
($_.User -like "nt authorityself") -and ($_.User -like "DOMAINUsernameUwantToFind")} | ft Identity, User -auto