List Dynamic Group Members

Get-Recipient -RecipientPreviewFilter (get-dynamicdistributiongroup <name of group>).RecipientFilter -OrganizationalUnit $group.RecipientContainer

List SoftDeleted Users

Get-MailboxDatabase | Get-MailboxStatistics | where {$_.DisconnectReason -ne $null} | ft displayname,database,disconnectreason -auto

Banner Change

Set-ReceiveConnector -Identity "Default Frontend BANKEXC1" -Banner "220 mail.itmakale.com.tr ESMTP"

Disconnected MailBox

Get-MailboxDatabase | Get-MailboxStatistics | where {$_.DisconnectReason -ne $null} | ft displayname,database,disconnectreason -auto
Get-MailboxStatistics -Database MBD01 | Where {$_.DisconnectReason -eq "SoftDeleted" -or $_.DisconnectReason -eq "Disabled"} | Format-List LegacyDN, DisplayName, MailboxGUID, DisconnectReason
New-MailboxRestoreRequest -SourceDatabase UserMailbox01 -SourceStoreMailbox "exctestuser1" -TargetMailbox "exctestuser"
Connect-Mailbox -Identity "Paul Cannon" -Database MBXDB01 -User "Robin Wood" -Alias robinw
Connect-Mailbox -Identity “mailbox name” -Database -User “AD user account name” -Alias