批量爲通信組添加RejectMessagesFromSendersOrMembers成員

批量爲通信組添加RejectMessagesFromSendersOrMembers成員，此操做不會覆蓋原來的配置，只是增長

$groups= Get-DistributionGroup -ResultSize unlimited

foreach($group in $groups) {

$current= $group.RejectMessagesFromSendersOrMembers

$current+= 'RejectSendEmailToGroup'

Set-DistributionGroup$group -RejectMessagesFromSendersOrMembers $current

若是想直接覆蓋原來的配置可以使用如下腳本

$RejectGroupOrUser="RejectSendEmail"

Get-DistributionGroup  | foreach{Set-DistributionGroup -Identity $_.name -RejectMessagesFromSendersOrMembers $RejectGroupOrUser}