We are receiving Spam mails from ID XYZ@xxxxxxxx Our Email domail is also abc.com. So all the users in the organization have the email ID as xxx@xxxxxxxx How to block such spams which is using the same domain name. Hitesh Shah This email with all information contained herein or attached hereto may contain confidential and/or privileged information intended for the addressee(s) only. If you have received this email in error, please contact sender and immediately delete this email in its entirety and any attachments thereto.