add follow up command to update dynamic group for sender auth

Author: JohnDuprey

Modules/CIPPCore/Public/Entrypoints/HTTP Functions/Identity/Administration/Groups/Invoke-AddGroup.ps1

@@ -62,6 +62,15 @@ function Invoke-AddGroup {
                         PrimarySmtpAddress = $Email
                     }
                     $GraphRequest = New-ExoRequest -tenantid $tenant -cmdlet 'New-DynamicDistributionGroup' -cmdParams $ExoParams
+
+                    if (!$GroupObject.allowExternal) {
+                        $SetParams = @{
+                            RequireSenderAuthenticationEnabled = [bool]!$GroupObject.allowExternal
+                            Name                               = $GroupObject.displayName
+                            PrimarySmtpAddress                 = $Email
+                        }
+                        $GraphRequest = New-ExoRequest -tenantid $tenant -cmdlet 'Set-DynamicDistributionGroup' -cmdParams $SetParams
+                    }
                 } else {
                     $ExoParams = @{
                         Name                               = $GroupObject.displayName

Modules/CIPPCore/Public/Standards/Invoke-CIPPStandardGroupTemplate.ps1

@@ -75,6 +75,15 @@ function Invoke-CIPPStandardGroupTemplate {
                                 PrimarySmtpAddress = $email
                             }
                             $GraphRequest = New-ExoRequest -tenantid $tenant -cmdlet 'New-DynamicDistributionGroup' -cmdParams $params
+
+                            if (!$groupobj.AllowExternal) {
+                                $SetParams = @{
+                                    RequireSenderAuthenticationEnabled = [bool]!$groupobj.AllowExternal
+                                    Name                               = $groupobj.Displayname
+                                    PrimarySmtpAddress                 = $email
+                                }
+                                $GraphRequest = New-ExoRequest -tenantid $tenant -cmdlet 'Set-DynamicDistributionGroup' -cmdParams $SetParams
+                            }
                         } else {
                             $Params = @{
                                 Name                               = $groupobj.Displayname