Useful PowerShell Commands for Office 365 Administration

Users

Get-MsolUser -UserPrincipalName xxxx

Groups

Get-Group -Identity xxxx

Get-DistributionGroup -Identity xxxx

Remove-UnifiedGroup -Identity

Set-DistributionGroup –Identity domain.com/OU1/OU2/OU3/group-name -AcceptMessagesOnlyFromSendersOrMembers((Get-DistributionGroup -identity domain.com/OU1/OU2/OU3/group-name).AcceptMessagesOnlyFromSendersOrMembers + “group-name@domain.com“)

Set-DistributionGroup -Identity domain.com/OU1/OU2/OU3/group-name -RequireSenderAuthenticationEnabled $true

Azure AD Sync

(Get-MSOLCompanyInformation).DirectorySynchronizationEnabled

Set-MsolDirSyncEnabled –EnableDirSync $true

Set-MsolDirSyncEnabled –EnableDirSync $false

To run form domain controller where ADSync is installed:

Start-ADSyncSyncCycle -PolicyType delta

Start-ADSyncSyncCycle -PolicyType initial

Mailbox

Get-Mailbox user@domain.com

Get-MailboxStatistics user@domain.com

Get-MailboxPermission user@domain.com | where {$_.isInherited -eq $false}

Get-RecipientPermission -Identity user@domain.com

Get-Mailbox -SoftDeletedMailbox -ResultSize Unlimited