AccPc 0 Posted April 15, 2019 Share Posted April 15, 2019 We are currently receiving a number of Crypto based Sextortion emails and would like to block them, they appear to be spoofed headers so the emails look to have come internally or from our contacts. They contain an image of the text spiel and was wondering if there was a way to stop these coming through? Link to comment Share on other sites More sharing options...
itman 1,659 Posted April 15, 2019 Share Posted April 15, 2019 (edited) Check out this thread: https://forum.eset.com/topic/14855-spoofed-email-address/ ; namely: Quote This problem can be solved by using DMARC: https://blogs.technet.microsoft.com/eopfieldnotes/2015/02/26/using-dmarc-to-prevent-spoofing/ -EDIT- Appears TechNet article is not longer available. Here's another reference: https://returnpath.com/downloads/authenticating-email-dmarc-spf-dkim-quick-start-guide/ Edited April 15, 2019 by itman Link to comment Share on other sites More sharing options...
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