Comment on How do email scammers spoof my email?

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rufus@discuss.tchncs.de ⁨1⁩ ⁨year⁩ ago

And you don’t even need SPF or AI to discard mails coming from the wrong mailserver. If you know the domain, you can do a lookup and see if the connecting mailserver is the one in the MX record. Check PTR records. At least throw away mail that’s coming from some random server and claims to cime from your own domain. You should know who is supposed to be a mailserver for your addresses.

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