![]() If you using Webmail, please see viewing email headers in Webmail. ![]() You can view full message headers in Microsoft Outlook 2019, Outlook 2016, and Outlook 2013 following the below steps. It is also helpful when reporting phishing emails. See Email spoofing explained for guidance on detecting fraud email.The email headers can be used to look into details about an email message source. The originating IP address is typically the most reliable information about where the message actually came from. While this is slightly more difficult to fake, it is still possible. X-Originating-Ip: The IP address of the computer that sent the message.If you compare the Message-ID for multiple emails and the IDs match, you know those messages are duplicates. The Message-ID is useful for diagnosing a duplicate email issue. Message-ID: A unique identifier assigned to a message.See Email spoofing explained for guidance on detecting fraud email. Return-Path: Like the Reply-To address, this is where return mail is sent.Spammers can easily fake Reply-To addresses. Reply-To: Determines which email address is auto-populated when you click the reply button to reply to an email in your email client.Received appears many times in a message header and should be read from bottom to top, as the first recipient is at the bottom of the header. Received: Displays a sequential list of computers and servers that received this message, the time they received this message, and the final destination of the message.Headers do not show any addresses that were included in the BCC field, as these addresses were intended to remain private. To: Displays the addresses listed in the To and CC fields.Date: The date and time when the email message was composed.Subject: The topic of the message as indicated by the sender. ![]() Spammers can easily fake sender addresses. Received: by (Authenticated sender: from: with HTTP Tue, 14:52:40 -0400 (EDT)įrom: "Assistant" From: Displays the message sender. Received: from (localhost.localdomain ) by (Postfix) with for Tue, 14:52:40 -0400 (EDT) ![]() Received: from (localhost ) by for Tue, 14:52:40 -0400 (EDT) () by (Dovecot) with LMTP id asdkasdfiwlefj for Tue, 14:52:41 -0400 If you suspect that you have received a spoofing email, see Email spoofing explained for more information. The following header is an example of a spoofed message. You have successfully viewed the message headers in the Outlook Web App. Note: If the Message details box is blank, click Close and repeat steps 2-4. ![]()
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