# Backup Accepted Domains
$AcceptedDomains = Get-AcceptedDomain | ConvertTo-Json
$AcceptedDomains | Set-Content -Path AcceptedDomains.txt
 
# Backup Mailboxes
$Mailboxes = Get-Mailbox -RecipientTypeDetails UserMailbox | ConvertTo-Json
$Mailboxes | Set-Content -Path Mailboxes.txt
 
# Backup User Information
$Users = Get-User | ConvertTo-Json
$Users | Set-Content -Path Users.txt
 
# Backup Mailbox Permissions
$MailboxPermissions = Get-Mailbox -RecipientTypeDetails UserMailbox | Get-MailboxPermission | where {$_.user.tostring() -ne "NT AUTHORITY\SELF" -and $_.IsInherited -eq $false} | Select @{Name='Name';Expression={[string]$_.Identity.Name}},@{Name='AccessRights';Expression={[string]::join(', ', $_.AccessRights)}},@{Name='User';Expression={[string]$_.User.RawIdentity}} | ConvertTo-Json
$MailboxPermissions | Set-Content -Path MailboxPermissions.txt
 
# Backup Mail Contacts
$MailContacts = Get-MailContact | ConvertTo-Json
$MailContacts | Set-Content -Path MailContacts.txt
 
# Backup Distribution Groups
$DistributionGroups = Get-DistributionGroup | Select *, @{label="Members";expression={($_ | Get-DistributionGroupMember).Name}} | ConvertTo-Json
$DistributionGroups | Set-Content -Path DistributionGroups.txt

# Load JSon Serialization
$LoadJson = [System.Reflection.Assembly]::LoadWithPartialName("System.Web.Extensions")
$JsonSerial= New-Object -TypeName System.Web.Script.Serialization.JavaScriptSerializer
$JsonSerial.MaxJsonLength = [int]::MaxValue
 
# Restore Accepted Domains
$AcceptedDomainsRaw = Get-Content -Path AcceptedDomains.txt -Raw
$AcceptedDomains = $JsonSerial.DeserializeObject($AcceptedDomainsRaw)
 
# Restore Mailboxes
$MailboxesRaw = Get-Content -Path Mailboxes.txt -Raw
$Mailboxes = $JsonSerial.DeserializeObject($MailboxesRaw)
 
# Restore User Information
$UsersRaw = Get-Content -Path Users.txt -Raw
$Users = $JsonSerial.DeserializeObject($UsersRaw)
 
# Restore Mailbox Permissions
$MailboxPermissionsRaw = Get-Content -Path MailboxPermissions.txt -Raw
$MailboxPermissions = $JsonSerial.DeserializeObject($MailboxPermissionsRaw)
 
# Restore Mail Contacts
$MailContactsRaw = Get-Content -Path MailContacts.txt -Raw
$MailContacts = $JsonSerial.DeserializeObject($MailContactsRaw)
 
# Restore Distribution Groups
$DistributionGroupsRaw = Get-Content -Path DistributionGroups.txt -Raw
$DistributionGroups = $JsonSerial.DeserializeObject($DistributionGroupsRaw)
 
Write-Host "Working on Accepted Domains.."
Write-Host " "
 
# Set Accepted Domains
foreach ($AcceptedDomain in $AcceptedDomains)
{
	$CheckAcceptedDomain = Get-AcceptedDomain | Where DomainName -eq $AcceptedDomain.DomainName.Address
	if (!$CheckAcceptedDomain)
	{
		Write-Host $AcceptedDomain.DomainName.Address is not exist. Creating.. -ForegroundColor Red
		$NewAcceptedDomain = New-AcceptedDomain -Name $AcceptedDomain.Name -DomainName $AcceptedDomain.DomainName.Address
	}
	else
	{
		Write-Host $AcceptedDomain.Name is already available. -ForegroundColor Green
	}
}
 
Write-Host " "
Write-Host " "
Write-Host "Working on Mailboxes.."
Write-Host " "
 
# Set Variables
$Database = "FABRIKAM"
$OrganizationalUnit = "fabrikam.com/Contoso"
$SecurePassword = ConvertTo-SecureString "12qwaszxcv!" -AsPlainText -Force
 
# Set Mailboxes
foreach ($Mailbox in $Mailboxes)
{
	if ($Mailbox.RecipientTypeDetails -eq "UserMailbox")
	{
		$CheckMailbox = Get-Mailbox | Where {$_.SamAccountName -eq $Mailbox.SamAccountName}
		if (!$CheckMailbox)
		{
			Write-Host $Mailbox.SamAccountName is not exist. Creating.. -ForegroundColor Red
 
			#$Database = $Mailbox.Database
			#$OrganizationalUnit = $Mailbox.OrganizationalUnit
			$NewMailbox = New-Mailbox -Password $SecurePassword -UserPrincipalName $Mailbox.UserPrincipalName -Name $Mailbox.Name -Database $Database -DisplayName $Mailbox.DisplayName -FirstName $Mailbox.FirstName -Initials $Mailbox.Initials -LastName $Mailbox.LastName -OrganizationalUnit $OrganizationalUnit -PrimarySmtpAddress ($Mailbox.PrimarySmtpAddress.Local + "@" + $Mailbox.PrimarySmtpAddress.Domain) -SamAccountName $Mailbox.SamAccountName
		}
		else
		{
			Write-Host $Mailbox.SamAccountName is already available. -ForegroundColor Green
		}
	}
	else
	{
		Write-Host Skipping $Mailbox.SamAccountName discovery mailbox.. -ForegroundColor Green
	}
}
 
Write-Host " "
Write-Host " "
Write-Host "Working on Email Addresses.."
Write-Host " "
 
# Set Email Addresses
foreach ($Mailbox in $Mailboxes)
{
	if ($Mailbox.RecipientTypeDetails -eq "UserMailbox")
	{
		$MailboxEmailAddresses = $Mailbox.EmailAddresses
 
		$TargetMailbox = Get-Mailbox | Where {$_.SamAccountName -eq $Mailbox.SamAccountName}
 
		foreach ($MailboxEmailAddress in $MailboxEmailAddresses)
		{
			$EmailAddress = $MailboxEmailAddress.Remove(0,5)
 
			$CheckEmailAddress = $TargetMailbox.EmailAddresses | where SMTPAddress -eq $EmailAddress
 
			if (!$CheckEmailAddress)
			{				
				Write-Host $EmailAddress is not exist. Adding.. -ForegroundColor Red
				$AddEmailAddress = $TargetMailbox | Set-Mailbox -EmailAddresses @{add="$EmailAddress"}
			}
			else
			{
				Write-Host $EmailAddress is already available. -ForegroundColor Green
			}
		}
	}
	else
	{
		Write-Host Skipping $Mailbox.SamAccountName discovery mailbox.. -ForegroundColor Green
	}
}
 
Write-Host " "
Write-Host " "
Write-Host "Working on Mailbox Permissions.."
Write-Host " "
 
# Set Mailbox Permissions
foreach ($MailboxPermission in $MailboxPermissions)
{
	$MailboxPermissionUsername = "FABRIKAM\" + ($MailboxPermission.User).Split("\")[-1]
	$CheckMailboxPermission = Get-Mailbox -Identity $MailboxPermission.Name | Get-MailboxPermission | where {$_.user.tostring() -eq $MailboxPermissionUsername -and $_.AccessRights -eq $MailboxPermission.AccessRights}
 
	if (!$CheckMailboxPermission)
	{
		Write-Host $MailboxPermissionUsername doesnt have permission on $MailboxPermission.Name mailbox. Adding.. -ForegroundColor Red
		$AddMailboxPermission = Add-MailboxPermission -Identity $MailboxPermission.Name -User $MailboxPermissionUsername -AccessRights $MailboxPermission.AccessRights -InheritanceType All
	}
	else
	{
		Write-Host $MailboxPermissionUsername has permission on $MailboxPermission.Name mailbox. Skipping.. -ForegroundColor Green
	}
}
 
Write-Host " "
Write-Host " "
Write-Host "Working on Mail Contacts.."
Write-Host " "
 
# Set Variables
$OrganizationalUnit = "fabrikam.com/Contoso"
 
# Set Mail Contacts
foreach ($MailContact in $MailContacts)
{
	$CheckMailContact = Get-MailContact | Where Name -eq $MailContact.Name
	if (!$CheckMailContact)
	{
		#$OrganizationalUnit = $Mailbox.OrganizationalUnit
 
		Write-Host $MailContact.Name is not exist. Creating.. -ForegroundColor Red
		$AddMailContact = New-MailContact -Name $MailContact.Name -DisplayName $MailContact.DisplayName -ExternalEmailAddress $MailContact.ExternalEmailAddress.SmtpAddress -OrganizationalUnit $OrganizationalUnit
	}
	else
	{
		Write-Host $MailContact.Name is already available. -ForegroundColor Green
	}
}
 
Write-Host " "
Write-Host " "
Write-Host "Working on Distribution Groups.."
Write-Host " "
 
# Set Variables
$OrganizationalUnit = "fabrikam.com/Contoso"
 
# Set Distribution Groups
foreach ($DistributionGroup in $DistributionGroups)
{
	$CheckDistributionGroup = Get-DistributionGroup | Where Name -eq $DistributionGroup.Name
	if (!$CheckDistributionGroup)
	{
		#$OrganizationalUnit = $Mailbox.OrganizationalUnit
 
		Write-Host $DistributionGroup.Name is not exist. Creating.. -ForegroundColor Red
		$AddDistributionGroup = New-DistributionGroup -Name $DistributionGroup.Name -Alias $DistributionGroup.Alias -DisplayName $DistributionGroup.DisplayName -Members $DistributionGroup.Members.value -Notes $DistributionGroup.Notes -OrganizationalUnit $OrganizationalUnit -PrimarySmtpAddress ($DistributionGroup.PrimarySmtpAddress.Local + "@" + $DistributionGroup.PrimarySmtpAddress.Domain) -SamAccountName $DistributionGroup.SamAccountName -Type "Distribution"
	}
	else
	{
		Write-Host $DistributionGroup.Name is already available. -ForegroundColor Green
	}
}