Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

了解更多

Importing edited Mbox file from Gmail - Manipulation test

  • 1 回覆
  • 1 有這個問題
  • 1 次檢視
  • 最近回覆由 Matt

more options

I am testing the theory behind manipulated emails and what forensic evidence can be obtained.

I notice that when Google Takeout is used to export emails from a Gmail account and are subsequently edited (in this case, the body text), SPF alters from "PASS" to "NONE with IP 0.0.0.0" and DKIM completely disappears in the "Original Message" view, however the headers remain unchanged with the exception of the edits to the body text.

The unedited email indicates SPF as "Pass" and DKIM as "Pass" (first image). This changes in the second image once any alteration is applied to the original email.

Before importing the email via Thunderbird, I delete the original email in Gmail (including the trash) and then load the manipulated email to Thunderbird and subsequently to the Gmail inbox.

Is there an explanation for the change in SPF and disappearance of DKIM to the manipulated email?

I am testing the theory behind manipulated emails and what forensic evidence can be obtained. I notice that when Google Takeout is used to export emails from a Gmail account and are subsequently edited (in this case, the body text), SPF alters from "PASS" to "NONE with IP 0.0.0.0" and DKIM completely disappears in the "Original Message" view, however the headers remain unchanged with the exception of the edits to the body text. The unedited email indicates SPF as "Pass" and DKIM as "Pass" (first image). This changes in the second image once any alteration is applied to the original email. Before importing the email via Thunderbird, I delete the original email in Gmail (including the trash) and then load the manipulated email to Thunderbird and subsequently to the Gmail inbox. Is there an explanation for the change in SPF and disappearance of DKIM to the manipulated email?
附加的畫面擷圖

所有回覆 (1)

more options

Details on the SPF standard can be found here. https://datatracker.ietf.org/doc/html/rfc7208 and DKIM here https://datatracker.ietf.org/doc/html/rfc6376

Both of these are server side technologies and well beyond the scope of this forum.