Blocking Senders Reporting Spam / Phishing This article describes how to block a specified sender or domain, as well as how to report spam or phishing to the Mimecast Security Team. The difference between the two actions is as follows: • Block a sender's address or domain. This added the sender's address or domain to your personal blocked senders list • Report the message as spam or phishing. This automatically triggers the following actions:          o The message is moved to your Junk E-Mail folder in Microsoft Outlook.          o The sender of the message is added to your Blocked Senders list.          o The message is forwarded to the Mimecast Security Team for analysis. Note: No notification is sent to the sender, if a message is blocked or reported for spam / phishing. Block a Sender's Address / Domain 1. Select one or more messages. 2. Select the Block Sender drop-down. 3. Select Block Sender or Block Domain .   Report Spam or Phishing 1. Select a Message. 2. Select the Report Message icon. 3. Select Report Spam or Report Phishing. 4. Click Report in the confirmation pop-up to report the email as spam or  phishing.