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braincode
on Aug 16, 2021
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How to prevent email spoofing, using an unholy com...
They are not too hard in principle, but w.r.t implementation, even Google fails in some respects today with DMARC and its own Google Calendar (invite notifications bouncing within the same GSuite):
https://www.reddit.com/r/sysadmin/comments/c5p7e8/dmarc_bloc...
mlazowik
on Aug 16, 2021
[–]
Calendar (and some other stuff) can be fixed by telling google to use the g suite domain for DKIM at
https://admin.google.com/ac/apps/gmail/authenticateemail
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