Show pagesourceOld revisionsBacklinksExport to PDFBack to top Share via Share via... Twitter LinkedIn Facebook Pinterest Telegram WhatsApp Yammer RedditRecent ChangesSend via e-MailPrintPermalink × Blocking Certain Top Level Domains Simply create a new transport rule as illustrated below. Exchange Admin Center→Mail Flow→Rules Last modified: 2018/02/25 01:18(external edit)