How to view e-mail Internet headers in Outlook
Like most e-mail programs, Outlook offers a way to display the source text of the e-mail or the SMTP header to clearly identify the origin of the e-mail. The Internet headers can also be used to analyze server delivery and encoding.
If you want to examine the SPAM status in the message header of an e-mail with Outlook, the section “X-Spam-Flag” with the X-Spam-Score value is of interest, you will notice that the X-Spam status is completely missing in the Internet headers, although these are given by Spamassassin.
With open the e-mail and go to File -> Properties.
The X-Spam information is simply truncated by Outlook, if you examine the header with another e-mail client, for example using a webmail application, you’ll find the full header. However, Outlook takes the X-Spam-Flag classification into account and moves the message to the Junk E-mail folder if it is received with X-Spam-Flag: YES, as long as the default setting in the Junk E-mail options has not been changed.
X-Spam header truncated snippet in Outlook:
Authentication results: mta-cu121.middle.org; dkim=pass (2048-bit key) header.d=outlook.com email@example.com header.b="NDq3pzWF" X-Spam-Flag: NO X-Spam Score: 0.501 X-Spam Level: X-Spam Status: No, score=0.501 tagged_above=-999 required=6.2 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, MIME_HTML_MOSTLY=0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, SUBJ_ALL_CAPS=0.5, TVD_SPACE_RATIO=0.001] autolearn=no autolearn_force=no Received: from mta-cu121.middle.org ([127.0.0.1]) by localhost (mta-cu121.middle.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xiFVOnehSqeY for <firstname.lastname@example.org>; Tue, 10 Jan 2023 15:41:15 +0100 (CET)
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