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Add-DMARCTransportRule.ps1

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+$LogonEmail = Read-Host "Enter Logon Email"
+
+Connect-ExchangeOnline -UserPrincipalName $LogonEmail
+
+#Internal Transport rule
+$InternalRule = @{
+    Name = 'DMARC Reject - Internal'
+    HeaderContainsMessageHeader = 'Authentication-Results'
+    HeaderContainsWords = 'dmarc=fail action=oreject'
+    RejectMessageReasonText = 'Unauthenticated email is not accepted due to the domain’’s DMARC policy'
+    RejectMessageEnhancedStatusCode = '5.7.1'
+}
+
+New-TransportRule @InternalRule -Mode Enforce -FromScope InOrganization
+
+#External
+$ExternalRule = @{
+    Name = 'DMARC SCL - External'
+    HeaderContainsMessageHeader = 'Authentication-Results'
+    HeaderContainsWords = 'dmarc=fail action=oreject'
+    SetSCL = 5
+}
+New-TransportRule @ExternalRule -Mode Enforce -FromScope NotInOrganization
+
+Get-TransportRule
+
+Disconnect-ExchangeOnline -Confirm:$false

DKIM.ps1

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+$LogonEmail = Read-Host "Enter Logon Email"
+
+Connect-ExchangeOnline -UserPrincipalName $LogonEmail
+
+
+$again = $true
+
+while ($again)
+{
+    $Option = Read-Host "
+    Enter 'g' to see current config,
+    Enter 'c' to create new config,
+    Enter 'e' to enable DKIM
+    Enter 'q' to exit"
+
+    if ($Option -eq "g")
+    {Get-DKIMSigningConfig}
+    elseif ($Option -eq "c")
+    {
+        $Domain = Read-Host "Enter Domain"
+        New-DKIMSigningConfig -Domain $Domain -Enabled $true
+        Get-DKIMSigningConfig
+    }
+    elseif ($Option -eq "e")
+    {
+        $Domain = Read-Host "Enter Domain"
+        Set-DKIMSigningConfig -Identity $Domain -Enabled $true
+        Get-DKIMSigningConfig
+    }
+    elseif ($Option -eq "q"){$again = $false}
+    else{Write-Host "Invalid Option, Try again"}
+}
+
+Disconnect-ExchangeOnline -Confirm:$false

Disable-DMARCTransportRules.ps1

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+$LogonEmail = Read-Host "Enter Logon Email"
+
+Connect-ExchangeOnline -UserPrincipalName $LogonEmail
+
+Disable-TransportRule -Identity "*DMARC*"
+
+Get-TransportRule
+
+Disconnect-ExchangeOnline -Confirm:$false

Disable-DelayHold.ps1

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+Connect-ExchangeOnline
+
+$Mailboxes = Get-Mailbox
+
+ForEach ($User in $Mailboxes){set-Mailbox $User.UserPrincipalName -RemoveDelayHoldApplied}

Get-GroupReport.ps1

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+$LogonEmail = Read-Host "Enter Logon Email"
+Connect-ExchangeOnline -UserPrincipalName $LogonEmail
+Connect-MgGraph -Scopes "Directory.Read.All"
+
+class Group {
+    [string]$Name
+    [string]$DisplayName
+    [string]$Type
+    [Member[]]$Members
+    [string]$UserPrincipalName
+    [string]$MemberDisplayName
+    [string]$Mail
+}
+
+class Member {
+    [string]$UserPrincipalName
+    [string]$MemberDisplayName
+    [string]$Mail
+}
+
+$gs = Get-Group | Select-Object *
+$Groups =
+ForEach ($g in $gs){
+    $Group = [Group]::new()
+    $Group.Name = $g.Name
+    $Group.DisplayName = $g.DisplayName
+    $Group.Type = $g.GroupType
+
+    $ms = $g.Members
+    $Members =
+    ForEach ($m in $ms){
+        $User = Get-Mailbox -Identity $m | Select-Object *
+        if ($User.Length -eq 1){
+            $Member = [Member]::new()
+            $Member.UserPrincipalName = $User.UserPrincipalName
+            $Member.MemberDisplayName = $User.DisplayName
+            $Member.Mail = $User.WindowsEmailAddress
+
+            $Member
+        }
+        else {
+            ForEach ($u in $User){
+                $grs = Get-MgUserMemberOf -UserId $u.UserPrincipalName | Select-Object *
+                ForEach ($gr in $grs){
+                    if ($gr.AdditionalProperties.displayName -eq $g.DisplayName){
+                        $Member = [Member]::new()
+                        $Member.UserPrincipalName = $u.UserPrincipalName
+                        $Member.MemberDisplayName = $u.DisplayName
+                        $Member.Mail = $u.WindowsEmailAddress
+
+                        $Member
+                    }
+                }
+            }
+        }
+    }
+
+    $Group.Members = $Members
+    $Group
+}
+
+$Groups2 =
+ForEach ($Group in $Groups){
+    $Group
+    $Group2 = 
+    ForEach ($member in $Group.Members){$member}
+    $Group2 = $Group2 | Sort-Object -Property UserPrincipalName -Unique
+    $Group2
+}
+
+$Groups2 | ConvertTo-Csv | Out-File ".\GroupReport.csv"
+
+Disconnect-MgGraph
+Disconnect-ExchangeOnline